Pollster: Dem party 'rift' won't carry on to midterms

Pollster Lee Miringoff said on Thursday that he didn't think the rift between progressive and centrist Democrats would carry over into November's midterm elections. 

“There’s a sense that is there really a split within the Democratic Party that’s carried over from the Clinton-Sanders contest in 2016? Or are the Democrats strong enough to be unified against Donald TrumpDonald John TrumpRussia's election interference is a problem for the GOP Pence to pitch trade deal during trip to Michigan: report Iran oil minister: US made 'bad mistake' in ending sanctions waivers MORE this November," Miringoff told Hill.TV's Joe Concha on "What America's Thinking." 

Miringoff's comments come as more progressive upstarts are challenging the party's lawmakers, most notably Alexandria Ocasio-Cortez, who defeated longtime Rep. Joe CrowleyJoseph (Joe) CrowleyOcasio-Cortez responds to Trump calling her a 'young bartender': The 'last guy who underestimated me lost' Progressives hammer DCCC over blacklist targeting primary challenges Beto could give Biden and Bernie a run for their money MORE (D-N.Y.) in a stunning primary upset in New York's 14th congressional district.

“When the race with Ocasio-Cortez broke loose…this notion that ‘see the Democrats are really moving further to the left this time,’ I’m not so sure that’s happened in other places," he continued. 

"Bernie SandersBernard (Bernie) SandersAndrew Cuomo: Biden has best chance at 'main goal' of beating Trump Poll: Buttigieg tops Harris, O'Rourke as momentum builds Buttigieg responds to accusation of pushing a 'hate hoax' about Pence MORE endorsements haven’t done a whole lot. I’m not sure the rift within the Democratic Party is really a rift or an occasional crack that doesn’t really carry through to November. I think Democrats are probably stronger in their opposition to Donald Trump than having a split internal to them," he added. 

Sanders and Ocasio-Cortez have thrown their support behind an array of progressive candidates ahead of the midterms. 

However, many of the candidates they have endorsed have been unsuccessful in their primaries. Only one of Sanders' endorsed candidates, was successful in their respective primary races last week.

Progressive candidates running as Democrats are also vowing to shake up the party if they win, with a number of them declining to back House Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiPence to pitch trade deal during trip to Michigan: report Julián Castro: Trump should be impeached for trying to obstruct justice 'in very concrete ways' Swalwell on impeachment: 'We're on that road' after Mueller report MORE (D-Calif.) for the Speaker's gavel if they retake the House.

— Julia Manchester