Another topic in the slicing and dicing of our newly compiled presidential-election-by-congressional-district data: where are the split districts? In other words, which districts won by Obama have Republican representatives, and which districts won by McCain have Democratic representatives? (CQ already beat me to the punch on this particular question, but to give it a new spin, I'm arranging them in order of the districts' three-way margin, which gives at least some relative sense of vulnerability.)
District
Republican
Obama Margin
District
Democrat
McCain Margin
LA-02
Cao
49.3
MS-04
Taylor
35.5
DE-AL
Castle
25.0
TX-17
C. Edwards
35.2
IL-10
Kirk
22.8
OK-02
Boren
31.2
PA-06
Gerlach
16.6
TN-04
L. Davis
29.8
WA-08
Reichert
14.8
AL-02
Bright
27.4
IL-06
Roskam
13.2
ID-01
Minnick
26.6
PA-15
Dent
12.4
TN-06
Gordon
25.3
IL-13
Biggert
9.6
LA-03
Melancon
24.0
MI-06
Upton
9.5
MS-01
Childers
23.5
NJ-02
Lo Biondo
9.3
AL-05
Griffith
22.9
MI-11
McCotter
9.2
MO-04
Skelton
22.7
IL-16
Manzullo
8.5
AR-01
Berry
20.3
IA-04
Latham
7.5
VA-09
Boucher
19.1
OH-12
Tiberi
7.5
AR-04
Ross
18.8
MI-08
Rogers
6.9
MD-01
Kratovil
18.5
VA-10
Wolf
6.8
UT-02
Matheson
18.1
MN-03
Paulsen
6.4
WV-01
Mollohan
15.3
NY-23
McHugh
5.2
WV-03
Rahall
13.5
CA-45
Bono Mack
4.6
GA-08
Marshall
13.4
CA-50
Bilbray
4.2
TN-08
Tanner
13.3
FL-10
Young
4.1
KY-06
Chandler
12.2
CA-26
Dreier
4.1
PA-04
Altmire
10.5
WI-01
Ryan
3.9
AZ-01
Kirkpatrick
10.2
NJ-07
Lance
3.5
AR-02
Snyder
9.9
CA-24
Gallegly
2.8
FL-02
Boyd
9.7
FL-18
Ros-Lehtinen
2.3
ND-AL
Pomeroy
8.6
MI-04
Camp
1.9
SD-AL
Herseth
8.4
VA-04
Forbes
1.5
PA-10
Carney
8.3
NE-02
Terry
1.2
SC-05
Spratt
7.2
WI-06
Petri
1.2
OH-18
Space
6.7
CA-25
McKeon
1.1
AZ-08
Giffords
5.9
CA-44
Calvert
0.9
NC-11
Shuler
5.6
CA-48
Campbell
0.7
NC-07
McIntyre
5.6
CA-03
Lungren
0.5
AZ-05
Mitchell
4.5
--
--
--
IN-08
Ellsworth
3.9
--
--
--
MN-07
C. Peterson
2.7
--
--
--
OH-06
C. Wilson
2.7
--
--
--
OH-16
Boccieri
2.6
--
--
--
CO-03
Salazar
2.5
--
--
--
PA-17
Holden
2.5
--
--
--
VA-05
Perriello
2.3
--
--
--
NY-29
Massa
2.2
--
--
--
FL-24
Kosmas
2.0
--
--
--
NY-13
McMahon
1.8
--
--
--
IN-09
Hill
1.8
--
--
--
NM-02
Teague
1.3
--
--
--
CO-04
Markey
0.9
--
--
--
PA-12
Murtha
0.4
--
--
--
PA-03
Dahlkemper
0.006
There's a definite tilt in the playing field that happened with 2008, compared with 2004: there are 34 Obama/R districts and 49 McCain/D districts. In the aftermath of the 2004 election, there were 18 Kerry/R districts and 41 Bush/D districts. The numbers have moved not only because Obama picked up a number of suburban districts that previously resided in the R+5 area (especially in places like California and Michigan), but also because of some inroads we've made at getting Blue Dogs elected in districts that were dark red in both 2004 and 2008. (Remember how the disparity in Kerry/R and Bush/D districts was part of the "permanent Republican majority?" They were going to slowly pick off all those Bush/D districts while, of course, we picked off nothing and the presidential bar didn't move, either.)
I don't want to cause your eyes to fall out by printing the whole 2004 list, so here's the top 10 in each category (worth seeing if only to see what a swath we've cut through the moderate Republicans in the last four years):