WASHINGTON — Sen. Thom Tillis, R-N.C., announced Sunday that he would not run for re-election, one day after he opposed a sweeping bill for President Donald Trump's agenda. The two-term Republican issued a lengthy statement about his decision, saying he has not been enthusiastic about seeking another six-year term in the Senate.

Following North Carolina Republican Sen. Thom Tillis' surprise announcement Sunday that he won't seek reelection, the questions immediately began swirling: Which Republicans might run for the seat instead?