Ron Johnson

NPR's Michel Martin asks Sen. Ron Johnson (R-Wis.) about the impact of the new round of tariffs imposed by the Trump administration.

Johnson's seat was once considered to be one of the most vulnerable for the GOP this cycle.

Pennsylvania, Georgia, Nevada and Arizona come into focus in final days. Plus: where things stand in seven other Senate contests.

Recent events are giving Democrats hope of retaining the 50-50 Senate, which they narrowly control with the vice president casting tie-breaking votes.

Democrats in Wisconsin are hoping to unseat Republican Sen. Ron Johnson and reelect Gov. Tony Evers. But even if they win, it might not translate to much action on abortion rights.

There were a number of eye-opening findings in the Jan. 6 committee's fourth hearing that showed the depth and breadth of Trump and his allies' pressure on local and state officials.

Though more Republican-held seats are up for grabs in November, Democratic struggles mean the GOP has improved its likelihood to take control of the Senate. Here are the key contests to watch.

The controversial Republican said he will seek a third term, in what is expected to be a hotly contested race that could determine which party controls the Senate.

Eugene Goodman was shown in a video played during the impeachment trial Wednesday directing Sen. Mitt Romney away from the mob.

Eleven senators and senators-elect said they would reject electors "from disputed states" without an investigation into the votes in those states. They did not provide evidence for their concerns.