Republicans, mindful of political history, say they have built the most extensive voter contact and persuasion operation ever, to ensure no potential GOP backer sits out November and to shield incumbents like the local congresswoman, Cathy McMorris Rodgers.

“We know who they are and we have the army of volunteers to be able to get out there, find them and bring them to the polls,” said Rick Gorka, a national Republican Party spokesman. “We know which buttons to push, what’s needed to motivate them.”

America First Action, a pro-Trump organization, hopes to raise $100 million to help coax the president’s supporters to the polls nationwide. “It’s not just about an election,” said the group’s president, Brian O. Walsh. “It’s about the agenda and keeping people engaged in the fight.”

But mobilizing voters turned off by politics, who supported Trump precisely because he’s so outside the norm, who may not like Congress regardless of which party has control, will be a challenge.