Our election data reporter Christine Zhang explains how double-digit swings in several counties helped Dr. Annie Andrews, a Democrat, defeat Senator Darline Graham, a Republican, flipping South Carolina in the U.S. Senate race.

Republicans see Michigan as a key Senate seat to flip. Our reporter Christine Zhang breaks down the race between Abdul El-Sayed and Mike Rogers.

Democrats need to flip four Republican-held Senate seats to regain the majority, but some of their targets are in states President Trump won by double digits in 2024. Our election data reporter Evan Reynolds explains just how difficult that might be.