Boebert, billionaires' tax and other midterms races still to watch

What and who are on the ballot: The race for Mississippi's Senate seat remains dramatically close with Democrat Scott Colom leading Republican incumbent Cindy Hyde-Smith by a little over 1,100 votes. The state has until 10 November to count provisional and late-arriving mail ballots.

On the campaign trail, Colom focused his message on plans to address economic concerns, while Hyde-Smith, the first woman to represent Mississippi in the US Congress, was endorsed by Trump and campaigned with him.

Why it matters: If Colom wins, he would be the first black US senator elected in Mississippi since 1875 - and the first Democrat since 1982.