Democratic presidential hopeful Rep. Seth Moulton Seth MoultonOvernight Defense: Nearly 500 former national security officials formally back Biden | 40 groups call on House panel to investigate Pentagon's use of coronavirus funds The Hill's Morning Report - Presented by Facebook - Markey defeats Kennedy; Trump lauds America's enforcers in Wisconsin Moulton fends off primary challenges in Massachusetts MORE (D-Mass.) said Thursday that voters backing President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE "know that he's an asshole," cautioning Democrats against trying to launch a "moral crusade" against the president.

“I think a lot of Democrats think, ‘You know, these Trump voters, what we need to do is we just need to educate them, and we're going to get it through their heads that this guy is a bad guy,’ ” Moulton said in a wide-ranging interview with Politico.

“OK, Trump voters are not idiots. We don’t need to give America a moral education; they know that he’s an asshole. They get it. They’ve just baked that in,” he continued.

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Moulton, a long-shot presidential candidate, told the outlet that his party could not afford to go on a "moral crusade" heading into next year's general election.

“When we’re trying to win over Trump voters in the general election, we can’t go on this moral crusade because people are like, ‘Give me a break,’ ” he added. “What they’re really saying is, ‘I get it, I get this guy is immoral. I’m voting for him anyway because you don’t give me a better alternative.’ ”

The Massachusetts congressman told Politico he believes he can campaign against Trump “in a way that doesn’t alienate his voters.”

Moulton is among more than two dozen people vying for the Democratic Party's 2020 presidential nomination. He was one of four candidates, including Montana Gov. Steve Bullock Steve BullockMcConnell locks down key GOP votes in Supreme Court fight Senate Democrats demand White House fire controversial head of public lands agency Pence seeks to boost Daines in critical Montana Senate race MORE, who did not make the stage for the first round of Democratic presidential debates.

Moulton has yet to collect donations from 65,000 Americans or meet 1 percent in three polls from a pre-approved list by the Democratic National Committee, making him unlikely to receive a spot on the stage at the next round of Democratic debates later this month.