LOS ANGELES — Three Republican groups have sued Gov. Gavin Newsom over his executive order to send mail-in ballots to California’s 20.6 million voters in November.

The suit was brought by the Republican National Committee, the National Republican Congressional Committee and the California Republican Party.

Republican National Committee Chairwoman Ronna McDaniel announced the lawsuit on Sunday through Twitter.

“His radical plan is a recipe for disaster that would create more opportunities for fraud & destroy the confidence Californians deserve to have in their elections,” McDaniel said.