Andy Harris (R): 43
Frank Kratovil (D): 34
Harris, as you recall, knocked off moderate GOP Rep. Wayne Gilchrest in a contentious primary earlier this year. Despite Gilchrest's non-endorsement of war wingnut Harris, at a PVI of R+9.8, this is going to be a tough district for Kratovil to win. He'll need to wage an aggressive campaign painting Harris as an extremist in order to have a shot here.