Round Four

Amazingly, the Indiana 9th District is looking at the fourth consecutive battle between the same opponents, with Democratic Rep. Baron Hill defending his seat against former Rep. Mike Sodrel. Sodrel challenged Hill in 2002 but lost, but then won the re-match in 2004. Hill got his seat back in 2006 and now the race is on again 2008. It's expected to be negative -- 6 years of running against each other has created some bad blood.

I'm curious: what's the record for most consecutive cycles where the same two major party candidates faced off?