Speaker Mike Johnson (R-La.) swore in Rep. Matt Van Epps (R-Tenn.) on Thursday morning, less than two days after Van Epps won an unexpectedly competitive special election to fill a vacant House seat.

Republicans sounded the alarm at the outcome of the Tennessee special election on Tuesday after Democratic candidate Aftyn Behn significantly overperformed in reliably Republican territory.

One thing that keeps the motivation–persuasion debate going is that, in any specific electoral race, both sides have an ...