First Read: "Despite the polls and predictions of big GOP gains, there is a visible path to Democrats holding on to the House. It's a tricky path, but it's a path we've seen traveled before in politics (John McCain's presidential primary in '08), sports (the Red Sox vs. the Yankees in '04), and even movies (the blackjack scene in The Hangover) -- to win, you have to run the table. Here's a race-by-race guide how they could do it. First, Democrats need to win the four or five GOP-held seats they're counting on (DE-AL, FL-25, HI-1, IL-10, LA-2), which would increase the Republicans' Magic Number from 39 to 43 or 44 (i.e., the GOP needs to pick up 43 or 44 seats to win back the House)."
"Then Democrats need to triumph in the Toss-Up contests where they're still competing. In the 7:00 pm ET poll-closing states, the key races to watch are: GA-2 (Sanford Bishop) GA-8 (Jim Marshall), IN-2 (Joe Donnelly), IN-9 (Baron Hill), and SC-5 (John Spratt). In the 7:30 pm ET states, they're OH-18 (Zack Space) and WV-1 (the Mollohan open). In the 8:00 pm ET states, they're AL-2 (Bobby Bright), IL-17 (Phil Hare), MA-10 (Delahunt open), MS-4 (Gene Taylor), MO-4 (Ike Skelton), NH-2 (Hodes open), NJ-3 (John Adler), PA-8 (Patrick Murphy), and PA-10 (Chris Carney). And in the 9:00 pm ET poll-closing states, they're CO-3 (John Salazar), MI-7 (Mark Schauer), NY-20 (Scott Murphy), NY-23 (Bill Owens), NY-24 (Michael Arcuri), SD-AL (Stephanie Herseth-Sandlin), and WI-7 (Obey open)."
"If Democrats can win an overwhelming majority of these races, they're on track to keeping their losses below 40. If not, Republicans will win the majority. It's that simple."
http://politicalwire.com/archives/2010/10/26/how_democrats_keep_the_house.html