In the fight for control of the US Senate, the majority may come down to which factor carries more weight: the map or the environment.

Sen. Mike Lee, R-Utah, leads the campaign to win 50 Republican votes for a conservative voter ID bill, but Senate Democrats plan to block the SAVE America Act in Congress.

WASHINGTON — The main Senate Republican campaign arm is eyeing at least three pick up opportunities to expand their majority ...

Six Republicans are running for the seat, including President Donald Trump's pick, Michael Whatley.

Democrat Nathan Sage is ending his campaign for Iowa's open U.S. Senate seat, leaving two high-profile Democrats competing to ...

A group of Republicans on Capitol Hill is urging President Donald Trump to intervene in Texas’s increasingly bitter three-way Senate primary, warning that the intraparty clash could spiral into being ...

The Senate is rumbling toward a likely successful vote on a package of three funding bills, but it’s what comes next that some lawmakers are worried about. The upper chamber is expected to pass a ...

Meet the candidate: Sarah Adlakha running for Senate ...

US Senate candidate Colom wants to increase minimum wage in Mississippi ...