2020 Senate elections take focus following Trump acquittal

Senators Doug Jones, D-Ala., and Tina Smith, D-Minn., both face reelection in November. (Tom Williams/CQ-Roll Call, Inc via Getty Images)

Candidates and outside groups often coordinate, most recently in Michigan

Republican Michigan Senate candidate John James speaks at a Donald Trump rally in December 2019. (Photo by JEFF KOWALSKY /