If Moore runs, the National Republican Senatorial Committee, the Senate GOP campaign arm, would take action to block him from the nomination. Otherwise, the NRSC plans to stay out of the Alabama primary…

Some conservative activists are hunting for a more Trump-friendly Republican, unhappy with Byrne’s ties to the GOP establishment. But like the establishment, many conservatives are desperate to avoid another Moore candidacy. Rep. Mo Brooks, a member of the House Freedom Caucus defeated by Moore in the GOP primary in 2017, could satisfy the concerns. The Huntsville-area congressman is privately exploring another bid, despite public pronouncements to the contrary.

But to avoid the sort of divisive primary that led to his defeat and Moore’s nomination, Brooks would only run if he received Trump’s endorsement or a pledge of neutrality. In the 2017 primary, Trump backed Luther Strange, who as Session’s temporary appointed successor was the incumbent and had the support of Senate Majority Leader Mitch McConnell, R-Ky.