(Tucson, AZ) -- The husband of former Arizona Congresswoman Gabrielle Giffords is reportedly considering a run for U.S. Senate. Politico reports Navy veteran and former astronaut Mark Kelly is laying the groundwork to run as a Democrat in the 2020 special election to replace the late Senator John McCain. Republican Martha McSally has been appointed to the seat on an interim basis. A source says Kelly has already met with the incoming chair of the Democratic Senatorial Campaign Committee. Giffords resigned her House seat a year after surviving a mass shooting in the Tucson area in 2011.