On 3 November, millions of people from across the United States turned out to have their say in the midterm elections - a vote which saw many seats flip from red to blue and the Democrats take control of both the Senate and the House for the rest of Donald Trump's presidency.
The extent of the political change came as a surprise to many. While a Democrat victory had been suggested, the number of votes for the party in some key states was much higher than pollsters had predicted.
Trump initially seemed to accept the result. But a week later, he took to social media to question the results, writing: “Does anybody really believe that this ‘election’ was honest. How could the polls be so wrong???”
Did the polls really call the election “wrong”? And how much faith should we be putting in polling anyway these days?
We speak to Lenny Bronner, founder of political data company Broome Street Labs, and Elaine Kamarck, from the Brookings Institution, to find out more.
If you spot a story you'd like us to dig into contact us at [email protected]
Production co-ordinator: Brenda Brown
