As a dozen Republicans gathered for a high-profile event in Washington, DC, hidden among them was a mole. Ken Paxton, the state's Attorney General and the Republican candidate for the Senate race in November, was speaking freely to donors when he made a comment that sent ripples through the White House and GOP. Donald Trump's Republican convention in Dallas, Paxton complained, had hurt the party. 'Everybody's numbers dropped,' he said. 'Yeah. Not good.' By Wednesday, the private conversation had been leaked to the New York Times. By Thursday, Trump was flying into Texas to campaign at Paxton's side ahead of his showdown with Democrat James Talarico in a battleground race that will be pivotal to the outcome of the midterms. 'We have to win this election,' Trump told reporters when asked why he was choosing to return to Texas. The extraordinary sequence has exposed a bitter Republican war, with Paxton's allies accusing establishment rivals of trying to sabotage their own nominee while ...