Former congresswoman Gabrielle Giffords (D-Ariz.) has closed her congressional campaign committee and transferred the remaining funds to her political action committee.

Giffords was considered a potential future candidate for higher office when she sustained a serious brain injury in a January 2011 shooting at a grocery store in Tucson. Even after the shooting and despite an arduous and still-continuing recovery process, some thought she could eventually run for Senate.

She later resigned her House seat and focused on running a pro-gun control campaign with her husband, Mark Kelly, called Veterans for Responsible Solutions.

On Thursday, she transferred the just-less-than $300,000 in her campaign account to another gun-focused effort, her Rights and Responsibilities PAC -- a transfer that is allowed by federal campaign finance law.

The termination of her campaign committee was first reported by Roll Call.