Lt. Gov. Kathy Hochul appeared in a campaign ad on Thursday that criticizes her opponent in the Democratic primary, Jumaane Williams, for his statements questioning abortion.

Abortion and reproductive rights has emerged as a galvanizing issue for Gov. Andrew Cuomo in the campaign this week, holding multiple rallies to push for the passage of the RHA.

Running mates run separately in party primaries in New York, and Williams, a well-known Brooklyn city councilman, could prove competitive for Hochul, a former House representative from western New York.

“Cynthia Nixon’s running mate Mr. Williams has been socially conservative and has not consistently supported a woman’s right to choose,” Hochul said in the ad. “Now more than ever, New York needs leaders who are 100% personally committed to pass pro-choice laws to protect New York from Trump. Governor Cuomo and I always have been and always will be.”

In Albany later in the day, Williams addressed the video while dropping off 65,000 petition signatures for ballot access that had been gathered for Nixon, Hochul and Zephyr Teachout, a Democrat running for attorney general.

In his remarks, he alluded to Hochul’s previous opposition to driver’s licenses for undocumented immigrants while she was county clerk in Erie County.

“I have always been supportive of a woman’s right to access safe, legal abortions and I often wonder why these attacks are coming from people like the lieutenant governor,” Williams said. “It might be because I’m a person of faith who happens to be black and a son of immigrants. I know she has had issues with immigrants in the past.”

He added, “To be clear: I want everyone to know on the abortion issue, you do not have to choose to have an abortion to support a woman’s right to choose a safe, legal abortion in this state and in this country. That latter part is under attack right now. That latter is what I have always defended.”

Cuomo has called on Senate Republicans, meanwhile, to return to Albany to approved the Reproductive Health Act, a bill that would strengthen abortion laws in New York. For now, Cuomo has formally called a legislative session. The governor cannot force votes in the Legislature.

Williams insisted to reporters he would be supportive of the bill, and blamed Cuomo and Hochul for its lack of traction in the Senate.

“They should have had it passed,” Williams said. “They’re in power and unfortunately they empowered the IDC. The governor is more about lip service.”