We're looking at a close to 30 seat majority in the house. Here are 20 close races that are within 5% and could have boosted the House margin to 60 or 70 seats.
CA-04
Doolittle 49%
Brown 46%
Margin: 7,000
CO-04
Musgrave 46%
Paccione 43%
Margin: 7,000
CT-02
Courtney 50%
Simmons 50%
Margin: -200
CT-04
Shays 51%
Farrell 48%
Margin: 6,500
FL-3
Buchanan 50%
Jennings 50%
Margin: 400
ID-01
Sali 50%
Grant 45%
Margin: 12,000
IL-06
Roskam 51%
Duckworth 49%
Margin: 4,500
NV-03
Porter 48%
Hafen 47%
Margin: 4,000
NJ-07
Ferguson 48%
Stender 47%
Margin: 3,000
NM-01
Wilson 50%
Madrid 50%
Margin: 2,300
NY-25
Walsh 52%
Maffei 47%
Margin: 11,000
NY-26
Reynolds 52%
Davis 48%
Margin: 6,000
NY-29
Kuhl 51%
Massa 49%
Margin: 6,000
NC-08
Hayes 50%
Kissell 50%
Margin: 500
OH-02
Schmidt 51%
Wulsin 49%
Margin: 1,500
OH-15
Pryce 52%
Kilroy 48%
Margin: 12,000
PA-06
Gerlach 51%
Murphy 49%
Margin: 3,000
VA-02
Drake 51%
Kellam 49%
Margin: 5,000
WA-08
Reichert 51%
Burner 49%
Margin: 2,500
WY-AL
Cubin 48%
Trauner 48%
Margin: 800