NRA meltdown has Trump campaign sweating

Republicans worry that the NRA and two other groups that have long formed the core of their electoral infrastructure will be effectively on the sidelines.

The National Rifle Association aired an avalanche of TV ads and pushed its 5 million-plus members to the polls for Donald Trump in 2016, propelling him in the Rust Belt states that delivered him the presidency.

Now, the gun rights group is in total meltdown — and senior Republicans and Trump 2020 officials are alarmed.

In recent weeks, the NRA has seen everything from a...