Bernie Sanders is on a “roll of inevitability” heading into the Nevada caucus next weekend, his campaign asserts.

Sanders vowed Saturday that if voter turnout is “decent,” he could score another early-state upset against Hillary Clinton.

“We surprised them in Iowa, we surprised them in New Hampshire, we’re going to surprise them in Nevada,” he told a crowd in Reno.

Sanders tied Clinton in Iowa on Feb. 1 and defeated her by 22 points in New Hampshire on Feb. 9.

Clinton held a 23-point lead over Sanders among likely Nevada voters in a December Gravis poll. A TargetPoint survey out Friday had the rivals tied.

Clinton spent Saturday meeting casino workers in Las Vegas while Sanders spoke with Native American groups ahead of the Feb. 20 Nevada caucuses.

Sanders also doubled down and released an ad Saturday noting that he attended Martin Luther King Jr.’s 1963 March on Washington after Georgia Rep. John Lewis said Thursday he never saw Sanders at civil-rights events.

Lewis, a Clinton ally, responded Saturday, saying he does not doubt Sanders participated in the civil rights movement and he did not mean to disparage him.