Jimmy McCain, a son of the late Arizona senator, backs Harris [Video]

Jimmy McCain, a son of former Arizona senator and 2008 Republican presidential nominee John McCain, said this week he has registered as a Democrat and will vote for Vice President Kamala Harris, a valuable nod of support for the Democratic nominee in a battleground state.Meanwhile, Donald Trump’s running mate, Ohio Sen. JD Vance, appeared outside Phoenix Wednesday for an event with the conservative youth organizing group Turning Point USA, which has been instrumental in remaking the Arizona GOP as a faithful organ of the former president’s “Make America great again” movement.Jimmy McCain’s endorsement and Vance’s Turning Point USA appearance reflect the disparate segments of the GOP that Harris and Trump are trying to reach. Democrats are appealing to traditional conservatives disillusioned by Trump’s takeover of the GOP, while Republicans are looking to shore up their base and ensure that their young supporters turn out.Democrats have made big inroads over the …