Here's how the vacancies will be filled: Rules differ across states for how to fill a Senate ... the current Republican ...

Election Day was Tuesday in Arizona, and voters had a chance to fill one seat in the race for the state's U.S. Senate seat. ...

Republicans have won enough seats to keep control of the House of Representatives, ABC News projects, clinching a unified GOP ...

Contests for Senate majority leader and House Republican conference chair headline GOP leadership elections on Capitol Hill ...

Trump tapped Vance as his running mate in July, prompting him to depart from the Senate to serve as vice president following the election. Here's how the process works.

Jesse Regan, a Broussard District 3 councilman, announced his candidacy for Louisiana Senate District 23 on Thursday. State ...

(Reuters) - Businessman Elon Musk, an ally of President-elect Donald Trump, endorsed Republican Senator Rick Scott for U.S.

Senate Republicans will elect a new leader for the first time in 17 years on Wednesday. Originally thought to be a two-person ...

Current Senate Republican Leader Mitch McConnell ... Republicans already have won 214 seats, according to Edison, just shy of the 218 needed to retain their current majority.

General election results show Democrats in Washington are on track to growing their already-strong majorities in the state ...

Going forward, every Senate election is going to be brutal. The institution is so skewed in favor of the current Republican coalition that Democrats need at least a few red-state seats to win ...

John Thune will become the next Senate majority leader, committed to enacting President-elect Donald Trump's agenda.