The fact that Bannon’s registration is not on the up-and-up is particularly damaging because Trump has in recent weeks been warning that “rigged” elections and voter fraud were “the only way we can lose” the election. Concerns about voter fraud, often with racial overtones, are a longstanding feature of American politics. More recently, a long string of states have worked to impose stricter voter requirements, eliminating or cutting same-day registration and early voting or requiring voters to show photo ID.

But voting experts point out that there are virtually no documented cases of in-person voter fraud, where someone shows up and votes in someone else’s name. More common are cases where someone is registered at an address where they don’t live—just like Bannon. It’s not altogether uncommon for people to have failed to update old registrations, but it’s particularly embarrassing for Bannon, since he is running a presidential campaign, no less one that is warning about widespread fraud. Moreover, the Guardian reports that Bannon may have previously registered at an address in Florida where he did not live. Wilfullly providing false voter-registration information in Florida is a third-degree felony, punishable by up to five years in prison.

Bannon also lives in Los Angeles and Washington, D.C. According to tax records, the D.C. residence “is actually owned by Mostafa El-Gindy, an Egyptian businessman and former member of parliament. Gindy has received favorable coverage from Breitbart News, which styles him as a ‘senior statesman.’”

Not only is the whiff of voter fraud an embarrassing disclosure for a campaign that has railed against it, but the domestic-violence charges make Bannon the latest figure on the Trump campaign embroiled in misogyny and violence. Trump himself has been accused of misogyny over the years, and his ex-wife Ivana even alleged marital rape, though she has since withdrawn the claim. Roger Ailes, the former Fox News CEO who was recently ousted after a long string of allegations of sexual harassment emerged, has also reportedly become an adviser to Trump. The Republican nominee trails badly among women, with sky-high unfavorable ratings. A recent Quinnipiac poll showed Clinton leading among women 60-36, while an NBC/Survey Monkey poll showed a 56-35 Clinton lead.

Bannon, who until August 17 was CEO of the Breitbart news organization, was brought into the reeling Trump campaign to replace Paul Manafort. Manafort had become politically toxic, as an accelerating number of stories explored his work for Kremlin-aligned former Ukrainian President Viktor Yanukovych. Manafort may have violated U.S. law by failing to register as a foreign agent, some experts believe. While Manafort was initially said to be remaining as campaign chairman, Trump had reportedly lost faith in his strategic counsel and he resigned two days after Bannon’s appointment.