Transmetropolitan is a series of 60 comics by Warren Ellis (one of my favourite comic authors, the other being Garth Ennis) about journalist Spider Jerusalem. It covers the period from the presidency of The Beast, through the election, to the presidency (and eventual impeachment) of The Smiler (Gary Callahan).
It was written from 1997 to 2002, but there are so many resonances with the events of the last couple of years.
You can get it from Amazon.
It's worth reading.