9to5Mac also has a photo of a staffer relying on a MacBook Air on the campaign trail, suggesting that Macs are making an inroads into the positions of highest power in the US. Past presidential hopefuls Al Gore and John Kerry also use Macs, as do President George W. Bush and ex-President Bill Clinton; the latter two, however, have more typically been associated with PCs, if and when they use computers. Clinton is known to have sent only two e-mail messages while in office, and Bush is not known to have sent any.