Michigan Gov. Gretchen Whitmer, a Democrat, says she will veto legislation passed by the Republican state Senate that would ban a common abortion procedure.

The state Senate and House passed legislation Tuesday morning to prohibit evacuation and dilation abortion procedures, referred to as “dismemberment abortions” by anti-abortion groups. The procedures account for the majority of second-trimester abortions.

Whitmer said Tuesday afternoon that she would veto the bills. “I think that these are decisions that should be made between a woman and her doctor,” Whitmer said. “I have always supported a woman’s autonomy and freedom to make her own choices, and that should be no surprise to anyone in this town.”

Anti-abortion activists, however, are hoping to go around Whitmer to enact the provision.

The Michigan Constitution allows for citizens to initiate legislation via petition. If they meet the required signature count, the legislature can then enact the bill without the governor’s signature.

Right to Life of Michigan has successfully used petitions in the past, including on legislation to require parental consent for minors seeking abortions and to ban partial-birth abortions. “If Gov. Whitmer follows through on her threat, we plan on collecting 400,000 signatures to bypass her and end late-term dismemberment abortions in Michigan,” said Right to Life of Michigan spokesman Chris Gast.

Several Republican-controlled states have passed bills to strictly regulate abortion in recent months. Some of the measures could challenge Roe v. Wade, the 1973 Supreme Court decision that legalized abortion nationwide.