A proposal by Republican election deniers in Arizona who want to opt out of the state’s government-run presidential primary election in 2024 and instead hold the party’s own one-day, in-person election, with paper ballots that would be counted by hand, has caused anxiety among top Republicans in Washington, who fear being drawn into a messy fight.

The state party leader rejected the Maricopa County Republican Committee’s proposal shortly ahead of a deadline on Friday after days of frenzied discussions that involved national Republicans and advisers to former president Donald Trump — likely setting up political backlash in 2024 in a state whose GOP has been pulled to the right in recent years by MAGA loyalists and election skeptics.

Jeff DeWit, chair of the state party, concluded that the party does not have the money, the manpower or the infrastructure to run an election for an estimated 1.4 million eligible voters.