It's a great question Doug, but on further thought I'm not sure how to read it. Some thoughts:
One can generally say that performance artists are driven by love and politicians by power, but if you look deeper, for no serious artist is Love really what they are trying to accomplish. Sure, Laurence Olivier, Rubinstein, they wanted the love ot the audience but they were searching for something deeper - to become a great actor, a great musician. Politicians want power, but Clinton wasn't simply looking for power, he was looking to make the world a better place, in a deep way.
You could say that Clinton's search was driven by love for humanity. That the artists search is from love of humanity, of art, and of themselves.
One could ask, which is the basic tool? Which one do people use as methods of getting to where they want, but this case seems just as lacking.
One can think of Freud Vs. Jung, or sex-drive versus power-drive, but sex is not love. When people act because they want sex do they do it out of love or out of power?
The question seems more at home in people's day to day actions which seem to be driven mainly by one of the two, but what about
happiness? Where would the drive for happiness stand?