A pair of Senate Democrats from a key battleground state on Thursday said that they would vote against the GOP’s six-month spending bill, raising questions about the possibility of a government shutdown when funding expires on Friday. Arizona Sens. Mark Kelly (D) and Ruben Gallego (D) said they will oppose both the spending bill itself and a procedural motion to advance the measure, which requires 60 votes. “I cannot vote for the Republican plan to give unchecked power to Donald Trump and Elon Musk,” Kelly said in a statement. “I told Arizonans I’d stand up when it was right for...