Being a gun control advocate means never having to settle for defeat. After Oklahoma passed and signed a constitutional carry bill into law earlier this year, opponents — including Moms Demand Action — set out to overturn it. They mounted an initiative campaign, trying to get constitutional carry on the ballot in November in hopes that voters would overturn it.

But that didn’t go as well as they’d hope. They failed to get the necessary number of petition signatures before the mandated deadline.

Now, however, in a last-ditch attempt to prevent Oklahomans from carrying firearms as the Second Amendment lays out, an anti-gun state representative has filed suit to block the law from taking effect on November 1.