The Economist’s model of America’s Congressional elections estimates both major parties’ chances of winning each House and Senate race, and of controlling each

Democrats and Republicans race for the Senate majority. Democrats are hoping to hold onto their slim Senate majority.

The U.S. Senate rivals clash not only on issues, but political style as well. They will face off on Wednesday in a Clean Elections debate.

This is a race being watched across the country with more than 60 media outlets scheduled to attend tonight’s debate.

Ruben Gallego and Kari Lake meet Wednesday for the only debate of the Arizona Senate race, a matchup that comes as voters begin casting ballots in a contest that will help determine control of the U.S.