On Tuesday, Alexandria Ocasio-Cortez, a millennial and socialist, defeated the chairman of the House Democratic Caucus, Rep. Joe Crowley Joseph (Joe) CrowleyHillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections 'Markeyverse' of online fans helps take down a Kennedy The Hill's Campaign Report: Trump visits Kenosha | Primary day in Massachusetts | GOP eyes Minnesota as a battleground MORE, in the race for New York’s 14th district. Crowley is the highest profile member of Congress to lose a primary since former Republican majority leader Eric Cantor Eric Ivan CantorThe Hill's Campaign Report: Florida hangs in the balance Eric Cantor teams up with former rival Dave Brat in supporting GOP candidate in former district Bottom line MORE, who lost his in 2014. The primary results in New York this week embodies many of the divisions currently plaguing the Democrats. Ocasio-Cortez’s triumph over a 10-term congressman is emblematic of the battle Democrats are having for the future of their party.

Recently, the most progressive circles of the Democratic Party have pushed for an increasingly extreme agenda, and in some cases, have espoused rhetoric that amounts to thinly veiled calls for violence against political opponents. To be sure, this backdrop of divisive rhetoric has come from both Democrats and Republicans, has become increasingly prominent, and is often woven directly in with their platforms.

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The idea of abolishing ICE is ridiculous. The agency serves a fundamental and legal role in our country. Democratic candidates, and now a prominent senator, calling for this sets the party back significantly. This aggressive shift in rhetoric is not only harmful to the both parties and their candidates, but to our democratic institutions, as bipartisan dialogue and compromise become less politically possible.

While Ocasio-Cortez’s platform of Medicare for all, guaranteed jobs by the federal government, and abolishing ICE has surely emboldened the left most and loudest voices in the Democratic Party, it is not a winning strategy for general elections nor an effective platform to govern on. Although liberal primary challengers have struggled, they have succeeded in forcing incumbents to shift leftward. Just as Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE did to Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE in 2016 on issues including the minimum wage and Wall Street regulation, his rise cost her votes in key swing states.

This is a dangerous trend for the Democrats leading into November. In fact, current polls indicate that Democrats with the highest chance of flipping seats in Congress are those that hold moderate and establishment values. Take Amy McGrath, the Democratic nominee in Kentucky’s 6th congressional district. McGrath is a veteran of the U.S. Marine Corps and a stable moderate. Unlike many of her party counterparts running on a progressive agenda, McGrath stands on a platform that includes moderate ideas, such as a bipartisan solution to the Affordable Care Act. In a DCCC poll earlier this year, McGrath leads the Republican nominee, Andy Barr Andy BarrReclaiming the American Dream Powell, Mnuchin stress limits of current emergency lending programs McConnell holds 12-point lead over Democratic challenger McGrath: poll MORE, 52 percent to 37 percent.

Similarly, Conor Lamb, the Democratic nominee for Pennsylvania's 17th congressional district, has run a textbook moderate campaign. In a district that has most recently voted Republican, Lamb has given the Republican candidate worthy competition. As of May, the Cook Political Report rates Lamb’s race as a toss-up, showing just how tight it is.

Both McGrath and Lamb showcase that moderate views can flip seats, and that the further Democratic candidates move to the left, the more they risk isolating themselves within a single radical niche. They won’t appeal to anyone but the faction within their own party, and risk losing seats the Democrats could otherwise flip in a general election. Remember that these far-left views are not held by the masses. Appealing to them will harm any chance of garnering votes from the traditional Democrat.

Indeed, it is not just the policies that are becoming more radical. Recently, Rep. Maxine Waters Maxine Moore WatersPowell, Mnuchin stress limits of current emergency lending programs Pelosi: House will stay in session until agreement is reached on coronavirus relief Omar invokes father's death from coronavirus in reaction to Woodward book MORE (D-Calif.) all but called for political violence against Trump administration officials. She said, “If you see anybody from that Cabinet in a restaurant, in a department store, at a gasoline station, you get out and you create a crowd and you push back on them, and you tell them they’re not welcome anymore, anywhere.”

This is simply not a Democratic Party that can win in November. “It’s horrible,” said Sen. Joe Manchin Joseph (Joe) ManchinManchin defends Supreme Court candidate Barrett: 'It's awful to bring in religion' The Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Trump meets with potential Supreme Court pick Amy Coney Barrett at White House MORE (D-W.V.) regarding the calling for public harassment of Trump aides. “Come to West Virginia. We won’t do that to them in West Virginia. That’s bad. That’s not the values of the Democratic Party I know.” Sen. Bill Nelson Clarence (Bill) William NelsonDemocrats sound alarm on possible election chaos Trump, facing trouble in Florida, goes all in NASA names DC headquarters after agency's first Black female engineer Mary W. Jackson MORE (D-Fla.) agreed. He said his “modus operandi” is to “try to treat the other person with respect” and that he “would hope that other people would do that as well.”

It is imperative that hardworking Americans understand that this radical rhetoric is not representative of the Democratic Party, nor do prominent Democrats want it to be. If the party continues down this path, centrist Democratic voters who previously followed the establishment will likely start leaving the party, and potentially vote for moderate Republicans.

When I worked for President Clinton, pursuing a moderate message was paramount to his reelection and his ability to effectively govern. Three decades later, voters are seeing less choice. Centrist voters recognize those in the Republican Party are closer to mirroring their ideals, thus relegating the Democratic Party to its most extreme members. Democrats must restore their faith in a single and more moderate platform and unite behind a message that fights for equal opportunity for all.

Douglas E. Schoen (@DouglasESchoen) served as a pollster for President Clinton. A longtime political consultant, he is also a Fox News contributor and the author of 11 books, including “Putin’s Master Plan: To Destroy Europe, Divide NATO, and Restore Russian Power and Global Influence.”