The AP reports: 

A proposed change to next year’s Montana U.S. Senate primary that was aimed at undermining Democratic Sen. Jon Tester’s reelection chances is likely dead after a state legislative committee shelved the GOP-backed measure Wednesday.

Some Republican lawmakers urged on by a GOP lobbyist wanted to alter Montana’s 2024 Senate primary so that only the top two candidates, no matter their party, would advance to the November election.

That would have effectively blocked out third-party candidates, who Republicans blamed for draining away potential GOP votes during past attempts to unseat Tester.

There’s nothing inherently wrong with a top-two primary — California and Washington have them. But the Montana senate bill looked especially cynical because the top-two primary would sunset after 2024, supposedly just so the state could try it out.