As Gov. Rick Scott embarks on a deep-pocketed campaign to unseat three-term Democratic Sen. Bill Nelson this fall, he faces the prospect of a splintered right flank, as pro-gun conservatives step up their criticism of him for signing gun control legislation prompted by the school shooting in Parkland.

On the eve of Scott's Senate campaign announcement, the Florida chapter of the National Association for Gun Rights sent an email to its members titled 'Gov. Gun Control Running for Senate.' The missive called Scott out for approving new restrictions on the sale of assault-style weapons, arguing that "instead of fighting to uphold the gun rights of law-abiding Floridians, he decided to compromise in an attempt to get elected to the U.S. Senate."