John, it's Arizona Senator Mark Kelly.

I know a thing or two about winning tough elections. And AZ-06 is shaping up to be one of the toughest races in the country.

Donald Trump won this district by just 1% last year. Winning a dogfight like this takes someone who knows how to fight and won’t back down.

That’s why I’m proud to announce that I am endorsing JoAnna Mendoza for Congress. Winning here is going to take a grassroots movement, and JoAnna is exactly the candidate to make it happen.

Jo and I have a lot in common. She is a retired U.S. Marine Corps Drill Instructor who served 3 combat tours in 2 different war zones. As a fellow veteran, I know she has the grit and determination to get the job done.

That’s why I’m writing to you today. The single most important thing you can do to help ensure Jo has the resources to win this fight is to make a grassroots contribution today.

Can I count on you to join me by making a $5 donation to help JoAnna Mendoza flip this swing district and Drill Congress Into Shape? We have to do everything we can to help her. >>

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Thanks for stepping up to help — it really makes all the difference.

- Mark Kelly

Paid For By Mark Kelly for Senate

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Mark Kelly was a Captain in the U.S. Navy and astronaut. Use of his military rank, job titles and photographs in uniform does not imply endorsement by the Department of the Navy or Department of Defense and reference to NASA does not imply endorsement by the National Aeronautics and Space Administration.