New legislative maps gave Democrats the opportunity to run in competitive districts in many cases for the first time in over a decade.

Ms. Baldwin has once again proven herself a survivor in an evenly divided swing state, where voters went for her and President-elect Donald J. Trump.

Wisconsin three-term Democratic Sen. Tammy Baldwin has successfully defended her seat from Republican challenger businessman Eric Hovde. Baldwin narrowly won, with 49.4% of the vote to Hovde’s 48.5%,