Former President Donald J. Trump suggested without evidence on Saturday that Georgia’s Republican governor was hampering his efforts to win the battleground state in November, a claim that carried echoes of Mr. Trump’s attempt to overturn his defeat to President Biden there in 2020. “In my opinion, they want us to lose,” Mr. Trump said, accusing the state’s governor, Brian Kemp, and its secretary of state, Brad Raffensperger, who is also a Republican, of being disloyal and trying to make life difficult for him. At a rally at the Georgia State University Convocation Center in Atlanta, in a speech that...