Election analyst Henry Olsen predicted Friday that the Democratic Party's progressive wing ultimately will fall in line with any Democratic presidential nominee voters elect because of their disdain for President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE.

"When push comes to shove, the Democratic base hates Trump so much that I think even many progressives would swallow disagreement if they lose that internal debate in order to get rid of the devil that they hate," Olsen, a columnist at The Washington Post, told Hill.TV's Jamal Simmons on "What America's Thinking."

"You've got different candidates who are throwing in with different styles, different policy mixes," he continued.

"I think you've had at least five of the contenders in the Senate who have co-sponsored the Senate version of the Green New Deal," he said, referencing the climate resolution unveiled by progressive firebrand Rep. Alexandria Ocasio-Cortez Alexandria Ocasio-CortezThe Memo: Dems face balancing act on SCOTUS fight Ocasio-Cortez hits back at Marjorie Taylor Greene over 'dumb blonde' joke on Twitter Ocasio-Cortez to voters: Tell McConnell 'he is playing with fire' with Ginsburg's seat MORE (D-N.Y.) this week. "Then you've got Democrats who haven't signed on to that."

Democratic presidential candidates, including Sen. Kamala Harris Kamala HarrisJoe Biden looks to expand election battleground into Trump country Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE (Calif.) and Sen. Elizabeth Warren Elizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE (Mass.), have embraced progressive ideas such as the Green New Deal or "Medicare for all."

Still, other Democrats and observers have said the party should not concern itself with appealing to progressive voters as much as appealing to blue-collar voters who flipped for Trump in 2016.

— Julia Manchester