At least, another Dem seat to defend and spend money on. A looney Rat is not likely to win election, maybe a centrist rat, I would think, but not a major league lefty.
However it works, put a few points in the R column.
Correct me if I'm wrong, but aren't all five seats in southern states? That would give an edge to Republican victory so long as it's not a John Mccain type Republican.