US midterm elections (2018)
Democrats won 41 House seats and took the majority, while Republicans gained two Senate seats and kept control. The election was the first national vote of Trump's first term.
Democrats launched investigations into the Trump administration and blocked parts of his legislative agenda.
The split Congress set the pattern for the next two years and preceded Trump's 2020 reelection loss.
It is the closest parallel: a first midterm under Trump, with the House flipping and the Senate staying Republican.
