Trump Allies Bombard the Courts, Setting Stage for Post-Election Fight

Republicans have unleashed a flurry of lawsuits challenging voting rules and practices ahead of the November elections, setting the stage for what could be a far larger and more contentious legal battle over the White House after Election Day.

The onslaught of litigation, much of it landing in recent weeks, includes nearly 90 lawsuits filed across the country by Republican groups this year. The legal push is already more than three times the number of lawsuits filed before Election Day in 2020, according to Democracy Docket, a Democratically aligned group that tracks election cases.

Voting rights experts say the legal campaign appears to be an effort to prepare to contest the results of the presidential election after Election Day should former President Donald J. Trump, the Republican nominee, lose and refuse to accept his defeat as he did four years ago. The lawsuits are concentrated in swing states — and key counties — likely to determine the race. Several embrace debunked theories about voter fraud and so-called stolen elections that Mr. Trump has promoted since 2020.

In Montgomery County, Pa., the state’s third-largest county, the party is seeking to force local officials to count ballots by hand, evoking debunked conspiracy theories about corrupted voting machines. A case filed by the Republican National Committee in Nevada this month falsely asserts that nearly 4,000 noncitizens voted in the state in 2020, a claim that was rejected at the time by the state’s top election official, a Republican.

If successful, the Republicans’ lawsuits would shrink the electorate, largely by disqualifying voters more likely to be Democrats. They seek purges of voter rolls, challenge executive orders from President Biden aimed at