(CNN) - Senate Minority Whip Jon Kyl threw his support behind Mitt Romney, the candidate's campaign announced Friday.
"After a long primary, it is time for the Republican Party to come together and support the candidate who will defeat President Obama. That is why I am proud to support Mitt Romney," the Arizona senator said in a statement.
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Kyl pointed to Romney's economic plan, drawing a sharp contrast to what he called President Barack Obama's "broken promises and failed policies."
"These next months will be hard fought and change will not come easy, but I am proud to stand with Mitt and to do anything I can to make sure he is our next president," the senator said.
Kyl joins other Congressional leaders who endorsed Romney earlier this week, including Senate Minority Leader Mitch McConnell and House Speaker John Boehner.
The third-term senator announced last year he will not run for re-election in the Grand Canyon State.