O'Malley rules out Senate as decision over White House bid looms

Former Maryland Governor and possible Democratic presidential candidate Martin O'Malley said on Tuesday he will not seek the U.S. Senate seat being vacated by retiring Senator Barbara Mikulski. O'Malley, who left office in January and has said he is considering a run for the White House, told reporters in an email he hoped other candidates would step up to represent the mid-Atlantic state, but "I will not be one of them." The move allows O'Malley, 52, to keep the door op