For the past year, there's been branding buzz on fonts used by political campaigns. Here's some info on political signs and McCain & Obama campaign fonts.
What font says 'Change'? - The Boston Globe
Obama uses Gil Sans & Gotham
McCain uses Optima
McCain fonts:
McCains Optimum Look - Campaign Stops - 2008 Elections - Opinion - New York Times Blog
Obama fonts:
Obama finds a reliable type to deliver message - US Election - theage.com.au