Between the writing of this piece and its publication, the Academy will, no doubt, have suggested settling best actress with a nude mud-wrestling match. It will have stood firm against objections for around 20 minutes before collapsing like a papier-mâché oil rig. The run-up to the 2019 Oscars had been characterised by just such misguided innovation and spineless capitulation: the proposed Oscar for best popular film, rumours that not all awards would be broadcast live, suggestions that only some best songs were to be performed. You can say what you like about Donald Trump, but he sticks to his lunatic, offensive, impractical schemes.

In theory, this chatter should have got enough people talking about the Oscars to guarantee a surge in viewing figures. Last year’s event was the least watched in history, and the various abandoned schemes were aimed at hastening up the action and widening the appeal. In truth, only a small portion of those not directly involved have been paying attention. The talk is, as Americans say of such things, very “inside baseball”.

That brouhaha has, however, distracted from the conversations that Oscar watchers really should be having. There have been as many fascinating ascents and bewildering tumbles this season as ever. Some five months ago, I declared that I would, once a week, remind readers that I had placed a bet on A Star Is Born to win best picture at 11/1. This proved satisfying a few days later when it had come in to 5/4. You can now get A Star Is Born at 50/1 with some bookmakers. Back in September a suggestion that Bohemian Rhapsody would not only get a nomination, but would be at shorter odds than the other musical smash, would have been sufficient grounds for a call to the men with the butterfly nets. Its nominal director, Bryan Singer, had been fired mid-production following allegations of unprofessional behaviour. At one stage, trade papers speculated the film would never get a release. It eventually opened to distinctly snitty reviews. But Bohemian Rhapsody made a fortune and Rami Malek, acclaimed as Freddie Mercury, now seems set to win best actor.

Meanwhile, several impossible things look likely to happen with one predicted win. Alfonso Cuarón's Roma, a lovely, monochrome study of life in 1970s Mexico City, won the Venice Film Festival and picked up the best reviews of the year. So what? When was the last time a Golden Lion winner also took best picture at the Oscars? Huh? Huh? Okay, it was last year with The Shape of Water. But it had never happened before that. It scarcely seems possible, but Roma would be the first film in a language other than English to take the top Oscar.

Then there is the Netflix issue. Granted only scant theatrical release (two screens in Ireland on the day it went live to stream), Roma could be the lowest grossing film to win the prize. Then again it may have made more than, say, The Hurt Locker. As Netflix refuses to release box-office figures, it is hard to say. The tensions between that company and old-school Hollywood surely delivered another blow to its Oscar chances.

Yet here we are. As we go into the final weekend, Roma remains favourite with most odds-makers and most pundits.

The lesson of this year's season is that the Academy is as divided as the rest of America and that – like those going to the polls in 2016 – voters are prepared to ignore any controversy to see their candidate elected. The steak-eaters in the prairies cared little about the allegedly dubious racial politics of Green Book. That film is the one most likely to topple Roma. The more cosmopolitan supporters of the Cuarón film and BlacKkKlansman hope to ride their high horse all the way to victory.

The recent move to make the electorate younger and more diverse has had an effect. The changes helped the zippy, mainstream Black Panther become the first superhero film to secure a best picture nomination. They also helped The Favourite, an Irish production from Element Pictures, to an eye-watering 10 nominations. Rather than transforming the Oscars across the board, the shift in demographics has produced a stark divide between the traditional (Green Book, Bohemian Rhapsody) and the challenging (Roma, The Favourite).

None of this will trouble the Irish talent up for statuettes. Ed Guiney, veteran Irish producer, receives a best picture nod for The Favourite. That film's cinematographer, Robbie Ryan, will also be brushing off his dinner jacket. Louise Bagnall's Late Afternoon competes in best animated short. Vincent Lambe's controversial Detainment, concerning the James Bulger case, is up for best live-action short. The nation awaits.

But why bother watching? Surely, after all the precursor awards and all the online coverage, we already know who's winning the major gongs. To an extent. Glenn Close, overdue in The Wife, is probably walloping Lady Gaga for the largely unrewarded A Star Is Born. Mahershala Ali, solid in Green Book, seems likely to take a second best supporting actor Oscar. But the best picture race has been oddly volatile in recent times. Last year, the competition was on a knife edge. Moonlight was a huge shock in 2016. Spotlight was a mild surprise in 2015. Either 12 Years a Slave or Gravity could have won in 2013. The recently introduced preferential ballot has spread the love in unpredictable fashion. So, some tension will persist to the last weary moment.

I still think Roma is going to win.

WHO WILL WIN & WHO SHOULD WIN

Best Picture

Black Panther
BlacKkKlansman
Bohemian Rhapsody
The Favourite
Green Book
Roma
A Star is Born
Vice

Will win: Roma
Should win: The Favourite
Roma is the most nominated, but is it too foreign? The Favourite is startlingly good, but its oddness may scare away the flyover voters.

Best Director

Alfonso Cuarón (Roma)
Adam McKay (Vice)
Yorgos Lanthimos (The Favourite)
Spike Lee (BlacKkKlansman)
Pawel Pawlikowski (Cold War)

Will win: Alfonso Cuarón
Should win: Pawel Pawlikowski
Cuarón looks secure even if Roma stumbles in best picture. The only challenge looks to be an "overdue" lunge for Spike Lee.

Best Actor

Rami Malek (Bohemian Rhapsody)
Christian Bale (Vice)
Viggo Mortensen (Green Book)
Bradley Cooper (A Star Is Born)
Willem Dafoe (At Eternity's Gate)

Will win: Rami Malek
Should win: Bradley Cooper
Malek does all you need: transformation, suffering, grand-standing. But Cooper deserves some love for his pet project.

Best Actress

Glenn Close (The Wife)
Lady Gaga (A Star Is Born)
Olivia Colman (The Favourite)
Melissa McCarthy (Can You Ever Forgive Me?)
Yalitza Aparicio (Roma)

Will win: Glenn Close
Should win: Melissa McCarthy
Like Julianne Moore a few years back, Close will finally get a win for a so-so, little-seen film. McCarthy is underappreciated here.

Best Supporting Actor

Mahershala Ali (Green Book)
Richard E Grant (Can You Ever Forgive Me?)
Sam Elliott (A Star Is Born)
Adam Driver (BlacKkKlansman)
Sam Rockwell (Vice)

Will win: Mahershala Ali
Should win: Richard E Grant
Ali could have done this in his sleep, but he's won at the Globes and at Bafta. He's in. Grant is famously happy to be here.

Best supporting actress

Emma Stone (The Favourite)
Rachel Weisz (The Favourite)
Amy Adams (Vice)
Regina King (If Beale Street Could Talk)
Marina De Tavira (Roma)

Will win: Regina King
Should win: Regina King
Probably the tightest of the big races. King is much liked, but she missed out on nominations at Bafta and the Screen Actors Guild. Adams ("overdue" again) the biggest challenge.

Best Adapted Screenplay

If Beale Street Could Talk (Barry Jenkins)
A Star Is Born (Bradley Cooper, Will Fetters and Eric Roth)
Can You Ever Forgive Me? (Nicole Holofcener and Jeff Whitty)
BlacKkKlansman (Spike Lee, David Rabinowitz, Charlie Wachtel and Kevin Willmott)
The Ballad of Buster Scruggs (Joel Coen and Ethan Coen)

Will win: BlaKkKlansman
Should win: If Beale Street Could Talk.
It's their chance to award Spike Lee. The only other best picture nominee here is the fading A Star Is Born.

Best Original Screenplay

Green Book (Brian Hayes Currie, Peter Farrelly and Nick Vallelonga)
The Favourite (Deborah Davis and Tony McNamara)
Roma (Alfonso Cuaron)
Vice (Adam McKay)
First Reformed (Paul Schrader)

Will win: The Favourite
Should win: The Favourite
The Favourite the most impressive screenplay here. But watch out for Green Book or a Roma sweep.

Best Cinematography

Roma (Alfonso Cuaron)
Cold War (Lukasz Zal)
Never Look Away (Caleb Deschanel)
The Favourite (Robbie Ryan)
A Star Is Born (Matty Libatique)

Will win: Roma
Should win: The Favourite
Generally a prize for "most cinematography". Roma is lovely. Cuarón set to become the first man to win for shooting his own film.

Best Film Editing

Bohemian Rhapsody (John Ottman)
Vice (Hank Corwin)
BlacKkKlansman (Barry Alexander Brown)
The Favourite (Yorgos Mavropsaridis)
Green Book (Patrick J Don Vito)

Will win: Vice
Should win: The Favourite
Tricky one. As in cinematography, they tend to go for "most." That feels like the busy Vice.

Best Animated Feature

Incredibles 2
Ralph Breaks the Internet
Spider-Man: Into the Spider-Verse
Isle of Dogs
Mirai

Will win: Spider-Man: Into the Spider-Verse
Should win: Spider-Man: Into the Spider-Verse
Few would have guessed this early on, but the Spider-Man flick has won over even high-brows with its crazy invention.

Best Documentary

Free Solo
Minding the Gap
RBG
Hale Country This Morning, This Evening
Of Fathers and Sons

Will win: Free Solo
Should win: Free Solo
Always a tricky one. Free Solo really grabs audiences. RBG was a US hit, but it is too by-the-numbers.

Best foreign language film

Roma (Mexico)
Cold War (Poland)
Shoplifters (Japan)
Capernaum (Lebanon)
Never Look Away (Germany)

Will win: Roma
Should win: Cold War
Well, d'uh! The only danger is voters giving another film a chance because they feel Roma has best picture in the bag. Even then, the vote would split.

Best Costume Design

Black Panther (Ruth E Carter)
The Favourite (Sandy Powell)
Mary Poppins Returns (Sandy Powell)
Mary Queen of Scots (Alexandra Byrne)
The Ballad of Buster Scruggs (Mary Zophres)

Will win: The Favourite
Should win: The Favourite
No offense to Sandy Powell, but they do tend to lean towards the period flick. Deserved, in this case. Rachel Weisz's dandy highwayman was to die for.

Best Makeup and Hairstyling

Border
Mary Queen of Scots
Vice

Will win: Vice
Should win: Border
Ah, give it to the weird Swedish film. They won't. They'll give to fattened-up Dick Cheney.

Best Production Design

The Favourite (Fiona Crombie and Alice Felton)
First Man (Nathan Crowley and Kathy Lucas)
Roma (Eugenio Caballero and Barbara Enriquez)
Mary Poppins Returns (John Myhre and Gordon Sim)
Black Panther (Hannah Beachler and Jay Hart)

Will win: The Favourite
Should win: The Favourite
See above comments about "period" films and costumes. Black Panther a risk here for its Afro-futurism.

Best Original Score

If Beale Street Could Talk (Nicholas Britell)
Mary Poppins Returns (Marc Shaiman)
Isle of Dogs (Alexandre Desplat)
BlacKkKlansman (Terence Blanchard)
Black Panther (Ludwig Goransson)

Will win: If Beale Street Could Talk
Should win: If Beale Street Could Talk
This will be very close between Beale Street and Black Panther. The latter generated a hit album. But the former is one of the era's great scores.

Best original song

Shallow (A Star Is Born)
All the Stars (Black Panther)
I'll Fight (RBG)
The Place Where Lost Things Go (Mary Poppins Returns)
When a Cowboy Trades his Spurs for Wings (The Ballad of Buster Scruggs)

Will win: Shallow
Should win: Shallow
After their frustrated early high hopes, the A Star Is Born team can console themselves with a certain win for the buskers' favourite.

Best sound editing

First Man
A Quiet Place
Bohemian Rhapsody
Black Panther
Roma

Will win: First Man
Should win: Roma
You probably need to hear Roma in Dolby Atmos (not on your phone's Netflix app) to appreciate its aural magnificence. First Man an easier bet.

Best Sound Mixing

A Star Is Born
Bohemian Rhapsody
First Man
Roma
Black Panther

Will win: A Star Is Born
Should win: Roma
First rule of Oscarology: They always give sound mixing to the musical. Could also be Rhapsody. See above as to why Roma can forget it.

Best Visual Effects

First Man
Avengers: Infinity War
Solo: A Star Wars Story
Ready Player One
Christopher Robin

Will win: Avengers: Infinity War
Should win: First Man
An entire army came together for Avengers. Voters may want to reward the highest grossing film of the year.

Best Animated Short

Animal Behaviour
Bao
Late Afternoon
One Small Step
Weekends

Will win: Bao
Should win: Late Afternoon
There's been some unease about the queasy imagery in Bao, but that Pixar short still seems to have it in the bag.

Best Documentary Short

Black Sheep
End Game
Lifeboat
A Night at the Garden
Period. End of Sentence.

Will win: Black Sheep
Should win: Black Sheep
Produced by The Guardian, the film has been in voters' faces since nomination. But who the heck knows here?

Best Live Action Short

Detainment
Fauve
Marguerite
Mother
Skin
Will win: Marguerite
Should win: Marguerite
Vincent Lambe's Detainment, on the James Bulger murder, may be too unsettling for viewers, but it will get seen. The lovely Marguerite is still favourite though. Again, who the heck knows?