DAVID GREENE, HOST:
OK, so that's the governor's race in Pennsylvania; a battle among Democrats. The other races we'll be watching closely tomorrow are mainly those among Republicans who want to serve in the Senate, and they are hoping it is a Senate with a GOP majority.
To walk us through some of these races, we're joined as we are most Mondays by Cokie Roberts. Cokie, good morning.
COKIE ROBERTS, BYLINE: Hi, David.
GREENE: And here in the studio with me is NPR senior Washington editor Ron Elving. Ron, good morning to you.