Need for leadership from the middle of the political spectrum?

IMHO,as American society becomes more polarized, we seem to get a decreasing number of candidates and officials who can lead from the middle of the political spectrum. This Rasmussen Report provides indirect evidence for that conclusion. It also suggests that the time might be right for a 3rd political party (one that can lead from the middle). 43% of Americans polled conclude that neither major party in Congress represents the people. LINK