Alfredo Castillo is becoming a regular in court.

On Friday, the Bridgeport city councilman was arraigned for his fourth arrest in a ballot tampering scandal that made national news.

He is one of nearly a dozen defendants – facing hundreds of counts – who could accept plea deals in the coming weeks and months.

Castillo doesn’t work for the Department of Housing and Urban Development.

But a new arrest warrant alleges that Castillo used “his Housing Authority HUD badge to impersonate a HUD worker” at Harborview Towers. That’s where a voter said she “recorded Castillo stuff ballots in his sweater.”

Neither the accuser, nor her attorney, agreed to speak with investigators.

According to the warrant, Castillo watched another voter fill out her absentee ballot before taking it, which is a felony.

“I asked [the woman], ‘Did you vote for who you wanted or did he tell you who to vote for?’” the warrant states. “[The voter] replied, He told me.’”

Investigators also spoke to a third woman at the complex, who said a “chubby” man came to her apartment and “told her who to vote for on the absentee ballot.” But in a photo lineup, the woman identified a man who died five years ago.

Castillo’s attorney, Frank Riccio, said the new charges are based in thin evidence.

“An alleged complainant identified a deceased individual as being the person who came to her house,” Ricco said. “It was interesting to see a judge sign a warrant based upon that information.”

Also facing a new ballot charge is Margaret Joyce, who worked on Mayor Joe Ganim’s 2023 reelection campaign. Two voters said that Joyce illegally took their absentee ballots.

“Someone came to my house and took my ballot from Ganims [sic] people,” a voter told investigators, according to the warrant.

Joyce already faced nine counts of ballot tampering.

The latest ballot charges are on top of hundreds of other counts – all related to the 2019 and 2023 elections in Bridgeport.

Several defendants could accept plea deals from prosecutors when they return to court on Dec. 10 and 11. One suspect, Josephine Edmonds, already pleaded guilty to witness tampering and illegally possessing ballots and received a three-year suspended sentence.

Riccio said Castillo’s new charges may complicate plea negotiations.

“It does to a degree. I believe that the state was aware of the [State Elections Enforcement Commission] complaint,” he said. “A new conversation will have to be had on Dec. 11.”

In the past, Castillo suggested that top Democrats, including Ganim and Sen. Chris Murphy, knew about their activities.

“The Murphys – everybody, all the Democrats,” he told reporters on March 6. “The lead bosses tell us to do the work, and we do and then we get criminalized. And it’s just not fair.”

But Riccio said that his client is unlikely to flip on others.

“If people have information and if they decide to share it, that’s one thing. I’m not saying he even has information,” said Riccio.

On this weekend’s “Connecticut Power and Politics,” Gov. Ned Lamont said he was unsure if the ballot suspects should receive prison time.

“I don’t know,” he said. “But I know all these recurring issues just put a cloud over Bridgeport. I want to get them going again.”