Super PACs spend about $4.10 million on media ads for Arizona Rep. Ruben Gallego, who will run for a U.S. Senate seat in the state starting in 2025, according to documents filed with the Federal Election Commission on Sept. 14. Protect Progress also reported that the group spent more than $3.70 million on media ads for Michigan Rep. Elissa Slotkin, who will run for a U.S. Senate seat.