A PEW poll this week found that while Republicans are more likely to perceive anti-Christian discrimination, Democrats are more likely to see discrimination against Muslims, gays and Jews. Would that that bit about Democratic sensitivity to anti-Semitism were true. If it were, more Democrats would be sounding the alarm about the cancer of Jew-hatred infesting their party.

Leading Democrats remain blasé at best, however. On Tuesday, House Speaker Nancy Pelosi revealed herself to be in ­utter denial about the disease, telling CNN that “we have no taint of that in the Democratic Party.” Self-delusion on this scale is almost heroic, what with Rep. ­Ilhan Omar’s repeated evocations of classic anti-Semitic tropes about Israel “hypnotizing the world” and buying US support with “Benjamins, baby.”

The cancer is fast-moving and invasive, and if Democrats don’t excise it from their midst, they will make it impossible for Jews to comfortably remain. Is it possible for Jews to actually leave the Democratic Party en masse? It’s not as outlandish as some may think. Just look to how British Jews have handled Jeremy Corbyn, who has brought a once-honorable and philo-Semitic Labour party into league with the likes of Hamas and Hezbollah.

This month, the Jewish Labour Movement passed a no-confidence motion against Corbyn’s leadership. As The Guardian newspaper reported, Labour and Corbyn both “were dealt a blow” when the acting general meeting of the JLM “voted to describe the party as ‘institutionally ­anti-Semitic.’ ”

Sad to say, but the US Democratic Party is sliding toward a similar fate. Soon, “institutionally anti-Semitic” could serve as an apt description for the Democrats, as well. Consider: Just this week, Pelosi, the most powerful Democrat in government, sat down with . . . none other than Corbyn.

To her credit, Pelosi didn’t shy away from the topic of anti-Semitism in her meetings in Britain, taking care to meet not just with Corbyn but also three defectors from ­Labour who left over anti-Semitism concerns. On Twitter, Pelosi wrote of her meeting with these former Labour party members.

Then again, in a tweet on her meeting, Pelosi wrote: “Pleased to have had a candid discussion with @JeremyCorbyn today about the direction of Brexit, Northern Ireland, NATO, acting boldly on climate, protecting human rights and the necessity of forcefully confronting anti-Semitism and ­Islamophobia.” What exactly did Pelosi have to say to a man who has laid wreaths at the graves of Palestinian terrorists?

Then, too, her lumping together of anti-Semitism with all other phobias, instead of treating it as a particular scourge, sounded all too familiar. It’s exactly what happened when Pelosi’s House Democrats impotently attempted to pass a bill in the wake of Omar’s anti-Semitic ­remarks last month but ­instead passed a wishy-washy and vague resolution against the ambiguous scourge of “hate.”

Pelosi herself claimed Omar’s remarks weren’t “intentionally anti-Semitic,” while Steny Hoyer, the House majority leader, said he didn’t believe Omar is an anti-Semite. Other Democrats went further in the whitewashing department. Rep. Ayanna Pressley, a freshman congresswoman, said: “We need to have equity in our outrage. Islamophobia needs to be included in this. We need to denounce all forms of hate. There is no hierarchy of hurt.”

Omar’s BFF, Rep. Alexandria Ocasio-Cortez, said: “No one seeks this level of reprimand when members make statements about [Latino and] other communities.”

And it’s not just the radical wing of the Democrats that is to blame. Remember: It was President Barack Obama who set out to put “daylight” between the United States and the Jewish state, whose Middle East policies consistently empowered Iran at the expense of Israel (and America’s traditional Arab allies), who in his final days in office allowed the UN Security Council to pass a resolution singling out Israel for condemnation.

Already under Obama, the Democrats were pursuing policies that the likes of Omar surely cheered. Only, Obama still retained a thin veneer of pro-Israel rhetoric.

If American Jews wish to stop the Democrats from turning their party into an American version of Corbyn’s Labour, they shouldn’t permit their votes to be taken for granted. The Democrats, like the Republicans, should have to earn Jews’ votes, and for the past 10 years, and especially lately, they’ve done little to do so. Come 2020, American Jews need to send a clear message — with their votes and their money.

Bethany Mandel is an editor at Ricochet. Twitter: @BethanyShondark