What Kyrsten Sinema’s switch means for the Senate

Sinema says she won’t caucus with Senate Republicans, so Democrats will still hold the majority next year. And she is expected to continue casting most of her votes with Democrats while separating herself on certain issues.

Kelly win in Arizona puts Dems 1 seat from Senate control

Democratic Sen. Mark Kelly won his bid for reelection Friday in the crucial swing state of Arizona, defeating Republican venture capitalist Blake Masters to put his party one victory away from clinching control of the chamber for the next two years of Joe Biden's presidency.