What does this English joke mean?

This is a political joke. It was drawn in a political cartoon. Hillary is the person who turns the light bulb, Kane or Clinton should help, and Patty Solis Doyle, Mark J. Penn, Howard Walson, Harold ickes and Mandy Grunwald are four people who provide experience. If you see cartoons, you will understand, but the literal meaning is difficult to understand.

Hillary Clinton's campaign in California was compared to changing a light bulb.