Summary
- Rep. Ruben Gallego is launching a $19 million ad blitz in the Arizona Senate race
- His Republican rival Kari Lake is planning a $10 million ad buy with the Senate GOP campaign arm
- The race for the outgoing Sen. Kyrsten Sinema’s seat is critical in determining the majority party in the fall
- Recent polling shows Gallego leading Lake, with Lake facing challenges due to past election objections and controversial rhetoric
