FILE - These 2012 file photos show incumbent Sen. Scott Brown, R-Mass., left, and Democratic challenger Elizabeth Warren, in Boston. Short on time and tempers, House and Senate candidat

 

              FILE - These 2012 file photos show incumbent Sen. Scott Brown, R-Mass., left, and Democratic challenger Elizabeth Warren, in Boston. Short on time and tempers, House and Senate candidat
FILE - These 2012 file photos show incumbent Sen. Scott Brown, R-Mass., left, and Democratic challenger Elizabeth Warren, in Boston. Short on time and tempers, House and Senate candidates in tight races are turning snarky and personal in their attacks on their opponents. The stakes, and the unpleasantness, are highest in the race for control of the Senate, where Republicans need to gain four seats to win the majority _ only three if Republican Paul Ryan becomes vice president and, in his role as Senate president, breaks any tie votes. In Massachusetts, GOP Sen. Scott Brown witheringly mocks Democrat Elizabeth Warren’s claims of Native American heritage.(AP File Photos)