Victor Marx, the Republican frontrunner for Colorado governor, declined to say how many people he has killed when pressed by a local television reporter, responding to the question with "Does it matter?"The exchange, which aired ahead of the weekend, came during a 30-minute interview conducted by Kyle Clark of 9News. Marx, who has built a political brand around a tough-guy image, claims he was forced to kill a man at age 7 and has spoken publicl…