Lincoln was one of those from the House and Hunter is in a league of his own. I stand by what I say when I say there is no one better. Being from California he is handicapped in that it is not likely a Republican could gain a Senate or governor position(that state is seriously messed up) and Hunter is too good to not make a run for the presidency.
The more that run the merrier
As an aside:
Lincoln was not a sitting rep when elected, he was a private lawyer. As a matter of fact he was defeated for the Senate by Douglas (Of "Lincoln-Douglas Debates" fame.)