The latest news on Kirk, Mark
Republicans gain in Pennsylvania, Nevada, and Florida.
Allied outside groups also make final push to Election Day.
Close House races in Democratic seats.
Senate Democrats spend third most last week.
From patriotism to pragmatism--why Americans enlist.
House party committees spent more than $16 million last week.
Democrats have jumped back into contention in congressional races around the country.
Outside groups continue to favor GOP candidates.
Delaware Tea Partyers snatch GOP defeat from the jaws of victory
Democrats pray for a Delaware upset.