“It’s yet another data point that the bipartisan consensus [in support of Israel] is, at least at the moment, no longer,” a former Biden administration official told Jewish Insider on Thursday. “Democrats think it’s politically advantageous to take these votes that would have been completely out-of-bounds just two-and-a-half years ago. … It’s deeply concerning if you care about the relationship, if you care about the security of [Israel]. But that’s the state of play at the moment, I think until or unless there’s an event that changes the trajectory.”

Abe Foxman, the former head of the Anti-Defamation League, said the vote highlights the “progressive socialist wing” of the Democratic Party’s increasing takeover. “This is a calamity for the Democratic Party, if it will not be contained and stopped,” Foxman told JI. “What’s also disturbing to me is that this litmus test is being first administered to every Jewish candidate.”

He added that the votes send a terrible message to U.S. allies beyond Israel that the U.S. can’t be relied upon.

Pro-Israel Democrats who spoke to JI said the votes came about as a combination of several factors: They served as a proxy for the war in Iran that nearly all Democrats oppose, but also were a signal of opposition to Israel’s operations in Lebanon, settler attacks and settlement expansion in the West Bank, the war in Gaza and — to a substantial degree — the Democratic enmity that has been growing for years toward Israeli Prime Minister Benjamin Netanyahu, his government and his alignment with President Donald Trump and Republicans.

And lawmakers are also responding to the growing progressive pressure, fueled by two years of imagery from the war in Gaza, amplified by social media platforms that boosted antisemitic content, that has changed the politics around Israel in a “really dramatic way” in the Democratic Party, the former Biden administration official said.

“Those [resolutions], at this moment in time, were just a proxy for real discomfort with the direction of the Trump-Netanyahu relationship in this war, which is not the right reason to vote for these,” another former Biden administration official told JI. “I understand the [vote to block] bulldozers at this moment in time. [Withholding] the munitions — I think it’s really, really troubling.”

Sen. Tim Kaine (D-VA), an early supporter of efforts to block weapons sales to Israel, said that the growing opposition can’t be blamed solely on Netanyahu. “I also think it’s watching how the weapons are used,” Kaine told reporters. “I think the observation of how the weapons are used is probably a little bit more the reason that the vote total is going up than a feeling about the domestic politics of Israel.”

Some pro-Israel Democrats say that the impact and meaning of the votes shouldn’t be overstated, and that there remains a sizable pro-Israel Democratic contingent, even including some of the lawmakers who voted for the resolutions on Wednesday.

“There were pro-Israel senators, and senators who are close partners and allies of the Jewish community, on both sides of this vote last night,” Halie Soifer, the CEO of the Jewish Democratic Council of America, said. “This didn’t occur in a vacuum, and it’s not necessarily driven by anti-Israel, and certainly not antisemitic, views. It also doesn’t necessarily represent a wholesale shift in the Democratic Party. It’s a snapshot of where we are in this moment as it relates to these particular arms sales and this particular Israeli government and its policies. But I have no doubt that there’s the chance that that will change in the future.”

Soifer said that she and JDCA didn’t support the resolutions, but emphasized that some of the Democrats who voted for the resolutions said in their statements that they remain strong supporters of Israel. And she said JDCA doesn’t view the votes as “inherently anti-Israel” or necessarily an expression of alignment with the far left.

She called the vote on the bulldozers, which received 40 supporters, a particularly potent “symbolic message” — many Democrats associate the machines with the destruction of Palestinian homes and expansion of settlements in the West Bank. But she said it was something of an “anomaly” as compared to previous efforts to block systems such as bomb guidance kits.

“It’s a challenging time where both things are true at once: You do have an increased number of Democrats who are supporting these [resolutions], and you also still continue to have a majority of Democrats who support the U.S.-Israel security relationship,” Soifer said.

A common refrain in conversations with those in the Democratic pro-Israel world after the votes — and even before then — was that the end of Netanyahu’s premiership would provide a critical opening and opportunity to start rebuilding support for Israel among Democrats.

Kaine said that a change in the Israeli government would lead lawmakers to step back and analyze the potential implications, but said it wouldn’t necessarily bring sweeping changes. “I don’t think the 40 [Democrats voting for the resolutions] is baked in, I also don’t think it will immediately change.”

But a Netanyahu defeat in this year’s Israeli elections is far from a sure thing. So what happens if Netanyahu wins again? “I think it will be very difficult for Democrats to hold any center on support for Israel,” one former Biden administration official said.

The other former Biden administration official said that the intense anti-Israel pressure on Democrats would likely fade if Middle East policy issues are out of the headlines on a day-to-day basis. They further argued that the 2028 primaries will be an “inflection point,” on both sides of the aisle.

And they said that the Jewish community, particularly the non-Orthodox community, needs to be more organized and active locally and on a grassroots level in advocating for their representatives to be supportive of the U.S.-Israel relationship.

Foxman said he hopes to see more Democratic lawmakers — naming Sen. Jacky Rosen (D-NV) specifically — standing up directly to the anti-Israel wing of the party, just as Sen. Ted Cruz (R-TX) has spoken out against antisemitism on the right.

With opposition to weapons systems for Israel apparently firmly within the mainstream, we wrote earlier this week about the emerging progressive push to cut off U.S. support for Israel’s missile-defense systems as well.

Asked whether he takes a similar view, Sen. Bernie Sanders (I-VT), the lead driver of the Senate votes, did not directly respond. “Let’s take one thing at a time. Right now, I think we made progress yesterday,” he told JI.

Kaine took a firmer stance in support of missile-defense aid, calling those who want to cut it off “a tiny minority,” especially in the Senate. He noted that no Democrats have offered similar resolutions to block defensive systems, and that other weapons sales to Israel have gone entirely unchallenged — though he acknowledged that the distinction between offensive and defensive weapons can be fuzzy at times.

One of the former Biden administration officials warned that opposing missile-defense support is a “totally unproductive, terrible” policy — not just for Israel, but also sending a message to allies around the world that the U.S. can’t be relied upon to follow through for its partners.