Pollster: Anti-establishment phenomenon 'is here to stay'

Pollster and HarrisX CEO Dritan Nesho said on Tuesday that the anti-establishment movement within American politics will be a long-term phenomenon. 

"I think Bernie SandersBernard (Bernie) SandersTrump's trade war — firing all cannons or closing the portholes? The Hill's 12:30 Report — Trump rips 'ridiculous' spending bill | FBI dragged into new fight | Latest on Maryland shooting Poll: Most Massachusetts voters don't think Warren should run for president in 2020 MORE did well for exactly the same reasons that [President] Trump did well. He ran as an outsider candidate. He ran as a candidate that was trying to shake the establishment. That's very appealing to American voters," Nesho told Hill.TV's Joe Concha on "What America's Thinking."

"We saw this for several of the leading candidates, primarily the person that won the presidency. So I think this phenomenon is here to stay. There's definitely a vein of unhappiness within American politics that needs to be addressed, and will take some time to sort out," he continued. 

Nesho's comments come as other anti-establishment candidates, such as New York congressional candidate Alexandria Ocasio-Cortez, gain prominence. 

Ocasio-Cortez beat longtime Rep. Joe CrowleyJoseph (Joe) CrowleyFor Capuano in Massachusetts, demography was destiny Carper fends off progressive challenger in Delaware primary Election Countdown: Fallout from Massachusetts stunner | In Delaware, Carper looks to avoid next progressive upset | Dem 2020 primary already in full swing | How a Dem ex-governor hopes to take red-state Tennessee | GOP challengers hit Dems over tax votes MORE (D-N.Y.) in the state's 14th congressional district's Democratic Primary last month. 

However, establishment figures, such as House Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiTrump boosts Heller, hammers 'Wacky Jacky' opponent in Nevada Lawmakers consider easing costs on drug companies as part of opioids deal New grounds for impeachment? House Dem says Trump deserves it for making society worse MORE (D-Calif.), have cautioned that Ocasio-Cortez is not representative of the national Democratic Party.

"It's ascendant in that district perhaps," Pelosi said referring to New York's 14th District, where Ocasio-Cortez is running. "But I don't accept any characterization of our party presented by the Republicans. So let me reject that right now."

— Julia Manchester

--This report was updated on July 25 at 8:45 a.m.