thompson. in virginia ten, barack obama is campaigning with tim kaine and jennifer wexton right now.hanks, steve. i don't know how you do it, how you keep your energy up, but we'll be watching you 24/7. >>> joining me to drill down on one of the races steve is looking at, anne thompson in the first congressional district in bucks county. what are you seeing there? >> reporter: these are your old stomping ground. you know bucks county well. it's known for its ticket-splitters. the first congressional district has been redrawn since 2016. this area went for hillary clinton in 2016 by two points, but it has a republican congressman. his name is brian fitzpatrick. and he is trying to hold off a very strong challenge from the democrat named scott wallace. he is the grandson of one of fdr's vice presidents, henry wallace. this is a toss-up state. the wallace campaign is outdo dr knocking. they have the goal of knocking on 200,000 doors in the last days of the campaign because it's all about get out the vote effort. this has been one of the most expensive congressional races in the country.