The 4th congressional district of Arizona will hold its Democratic primary on Tuesday, and 45‑year‑old activist Kai Newkirk is positioning himself as a direct challenger to four‑term incumbent Rep. Greg Stanton.

Newkirk, a self‑described democratic socialist known for civil‑disobedience protests, has made Israel and the American Israel Public Affairs Committee (AIPAC) the centerpiece of his campaign. He has repeatedly accused Stanton of receiving more than $300,000 in campaign contributions from AIPAC and of supporting a “war‑crimes” agenda that funnels U.S. tax dollars into Israel’s military. On X, Newkirk wrote, “Greg Stanton has taken over $300K from AIPAC…he just voted to send billions more of our tax dollars to Israel to fund their war crimes and genocide.” He also points to a $45 million text‑message campaign that, according to him, sought to improve Israel’s image in the United States.

On the trail, Newkirk has outlined a platform that calls for ending all U.S. military aid to Israel and for imposing an arms embargo on the country. He has labeled Israel’s actions in Gaza as genocide. Polls from groups aligned with each candidate show divergent results. A poll favoring Newkirk shows Stanton ahead by eight percentage points, while a poll conducted two weeks earlier by a Stanton‑favored group shows the incumbent up by 33 points.

Stanton, 56, voted against a House amendment introduced by Rep. Thomas Massie that would have cut $3.3 billion in military aid to Israel. In a statement posted to X, Stanton explained that the amendment would “undermine America’s ability to counter real threats from Iran” and weaken the U.S. capacity to promote long‑term stability in the region. He also criticized Israeli Prime Minister Benjamin Netanyahu, saying that “clear change is necessary” as the U.S.–Israel security agreement, which includes $3.8 billion in annual military subsidies, approaches its 2028 expiration.

AIPAC’s involvement in the race has drawn scrutiny. The lobbying group has removed the option on its website for donors to support candidates who voted to cut aid to Israel. According to reports, more than a dozen AIPAC‑endorsed members of Congress voted against the aid amendment last week.

Newkirk’s campaign has received endorsements from progressive organizations such as Our Revolution, Track AIPAC, and the Progressive Democrats of America. The host of the Young Turks, Cenk Uygur, also endorsed Newkirk, describing him as “Israel Free” and praising his lifelong fight to remove money from politics.

However, the Young Democrats of Arizona withdrew its endorsement of Newkirk earlier in July, citing “concerning patterns of behavior.” The organization did not specify the patterns in question. Newkirk responded on X, calling the withdrawal a “false report” and accusing the group of “weaponization of … disavowed misinformation.”

Despite the controversy surrounding his endorsements, Newkirk has publicly stated that he stands with Jewish Americans against antisemitism while opposing what he calls the genocide in Gaza. He has spoken out against the killing of two Israeli Embassy staffers outside the Capital Jewish Museum in Washington, D.C., last year.

The primary comes at a time when several left‑wing congressional candidates with critical stances on Israel have secured Democratic nominations nationwide. Israel and AIPAC have become increasingly unpopular among Democratic voters, according to recent polling data.

Voters in the 4th district will weigh Newkirk’s anti‑aid platform against Stanton’s record and his defense of U.S. support for Israel. The outcome will decide whether the incumbent’s four‑term tenure continues or whether a new representative with a markedly different foreign‑policy agenda takes office.

The race is the next step in a broader debate over U.S. aid to Israel and the influence of pro‑Israel lobbying groups in American politics. No further votes or legal actions are pending in this particular contest, but the results will be closely watched by both progressive activists and supporters of the current congressional delegation.