| 5 Facts About Kaine Wait, who is Tim Kaine? Well, here's a start: He's the guy Hillary Clinton picked for her running mate. The self-described "boring" Virginia senator has served at nearly every level of government — yet Kaine's big debut as Clinton's running mate may very well be most Americans' first introduction to the man. So, we drew up this handy-dandy primer | | | | | | | | |