Al Jazeera’s guide to the US midterm elections

Fifty-three percent of eligible voters cast ballots in the last United States midterm elections in 2018, marking what the Census Bureau said was the 'highest midterm turnout in four decades' [File: Paul Ratje/Reuters]

Election Day is less than 24 hours away in the United States, where millions of voters are expected to cast their ballots on Tuesday in key midterms.

The vote to determine the next makeup of Congress comes as the country faces intense political polarisation and amid widespread concerns over a struggling economy, reproductive rights, and the future of democracy itself.