U.S. Senate GOP candidate Darryl Glenn picked up a major endorsement on Tuesday in the race to be the nominee to run against Democratic U.S. Sen. Michael Bennet.Former Republican vice presidential candidate Sarah Palin has come out in support of the Colorado Springs Republican, calling him a proven hero.“Over two decades of exemplary military service brought him honor and adulation from his intelligence, leadership skills, fiscal responsibility and patriotism,” Palin said on her Facebook page. “His deserved recognition honed a servant’s heart. He’s one who proudly clings to God, guns and our Constitution.”It is unknown if the endorsement also will...