Vice President Kamala Harris on Monday scored an endorsement from a Republican mayor in a key swing state. Writing in the Arizona Republic, Mesa Mayor John Giles said that he’s backing Harris not only because he opposes the election-denying former President Donald Trump, but also because he believes that the Biden-Harris administration has done a good job of investing in Arizona’s economy. “Under the Biden-Harris administration, Mesa has seen historic federal funding for the Phoenix-Mesa Gateway Airport, along with investments to make sure our streets and public transit systems benefit from mo…