A group of anti-abortion advocates is trying to force Florida’s abortion amendment off the ballot this November or void any votes cast for it, citing a report from the DeSantis administration that said there was “widespread” fraud in the petition gathering for the effort.

A lawsuit filed Wednesday in the Ninth Judicial Circuit argues that the sponsors behind Amendment 4 failed to meet the required signature threshold to get on the ballot when that alleged fraud is considered. The anti-abortion plaintiffs are being represented by former Florida Supreme Court Justice Alan Lawson.

Amendment 4 proposes protecting abortion access until viability, about 24 weeks of pregnancy, and would undo the state’s ban on most abortions after six weeks of pregnancy. Gov. Ron DeSantis has vowed to defeat the initiative.