Abdul El-Sayed, the progressive Democratic nominee for Michigan's US Senate seat, has asked former primary rival Congresswoman Haley Stevens to stay away from his campaign events, blowing open a factional dispute the party can't afford with control of the Senate potentially at stake. The two had planned to appear together at a Detroit church service on Sunday. That's now off. The proximate trigger: Stevens demanded El-Sayed denounce an outside group's ad linking higher consumer prices to US support for Israel's war in Gaza. El-Sayed refused, instead accusing Stevens of relitigating a primary that ended three months ago and pointedly noting that the American Israel Public Affairs Committee spent heavily to defeat him during that contest. Stevens endorsed El-Sayed after his August primary win but has publicly criticized him for weeks; her fiancé, Jason Turkish, has been campaigning for Republican candidate Mike Rogers. The underlying structure is familiar. A progressive nominee who won a bruising primary now needs the moderate wing's institutional support and voter networks to win a general election. The moderate loser, still smarting and ideologically distant on a white-hot issue — in this case, Israel-Gaza policy and AIPAC's role in Democratic politics — is withholding that support while maintaining the appearance of party unity through a nominal endorsement. The endorsement is technically on the books. The cooperation is not. Michigan state senator Mallory McMorrow captured the Democratic establishment's frustration with blunt precision: "I have no idea what the hell Haley Stevens is doing. This is a moment where we have to recognize the stakes. People are not talking about ads. They are not talking about Haley Stevens. They are talking about the price of gas and groceries." The subtext is clear — intra-party posturing on Israel is a luxury the ticket cannot afford in a state where kitchen-table economics dominates voter attention. The deeper question is whether this rupture is personal grudge or structural. AIPAC's heavy primary spending against El-Sayed created a wound that hasn't healed. Stevens' fiancé actively supporting the Republican opponent suggests the breach goes beyond tactical disagreement into something closer to factional sabotage. If El-Sayed loses a tight race to Mike Rogers, the post-mortem will trace the margin back to this moment. For Democrats nationally, Michigan is one of the seats the party must flip to retake the Senate. Every percentage point of turnout suppression from disaffected moderate Democrats or confused messaging matters. The public feuding doesn't just waste campaign oxygen — it signals to persuadable voters that the party can't govern its own coalition, let alone the country. El-Sayed's framing — "beating Mike Rogers, holding Trump accountable, and getting money out of politics" — is an attempt to redirect toward a general-election message. But the very act of publicly disinviting a sitting congresswoman from a church event generates exactly the distraction he claims to be avoiding. Both sides are now performing their grievances for the media rather than resolving them privately, which is the surest sign that the rift is structural, not tactical.