After being virtually tied with Democratic presidential candidate Hillary Clinton for several months, Republican contender Rudy Giuliani now leads Clinton up 47% to 40% in the latest Rasmussen Reports national telephone survey. In the match-up of the frontrunners, this result marks a significant shift. For the last three months the two frontrunners have never been further apart than three percentage points. Last month, Giuliani and Clinton were separated by just a single point.