In less than a month US voters will get a chance to express their feelings about the direction of the country in elections for seats in the House of Representatives and the Senate.

While president Donald Trump is not on the ballot, his unpopularity is weighing his party down. Polls show a “blue wave” looks likely, with Democrats favoured to win back the House and possibly the Senate. But many races are still very close.

Washington correspondent Keith Duggan has been visiting some of the key battlegrounds to find out about the candidates and the issues. He talks to Hugh Linehan on today’s Inside Politics podcast.