John Arnold swept all four precincts in Tuesday’s Republican primary runoff for Warren County supervisor in District 1, setting the stage for a three-man race in the Nov. 8 general election.

Arnold, 57, a real estate broker, won 55.3 percent of the vote to three-term incumbent David McDonald’s 44.6 percent, according to unofficial totals of poll votes and ballots cast by absentee and affidavit. The Secretary of State’s Office expects to certify primary runoff results statewide by Sept. 2.

Expectations of a tight race reminiscent of Arnold’s 17-vote loss to McDonald in the primary four years ago ended when Arnold edged McDonald by 19 votes in Culkin, the county’s largest precinct, and took more than two-thirds of the vote in Bovina.

“I didn’t campaign on individual issues,” Arnold said when unofficial numbers were read in the courthouse. “I ran to represent the people.”