This is what a possible map would have been in 2010 if Michigan lost 2 house seats instead of 1.
1 (blue): 49.7 Obama, 48.5 McCain; 44.6 Dem, 55.4 Rep.
2 (green): 46.1 Obama, 52.3 McCain; 34.8 Dem, 65.2 Rep.
3 (purple): 52.6 Obama, 45.7 McCain; 43.9 Dem, 56.1 Rep.
4 (red): 62 Obama, 36.4 McCain; 55.1 Dem, 44.9 Rep.
5 (gold): 51.4 Obama, 46.9 McCain; 41.2 Dem, 58.8 Rep.
6 (teal): 50.6 Obama, 47.7 McCain; 41.9 Dem, 58.1 Rep.
7 (gray): 53.2 Obama, 45.2 McCain; 42.5 Dem, 57.5 Rep.
8 (slate blue): 49.1 Obama, 49 McCain (by a margin of 425 votes); 41 Dem, 59 Rep.
9 (cyan): 62.5 Obama, 36.1 McCain; 52.1 Dem, 47.9 Rep.
10 (pink): 50.2 Obama, 48.3 McCain; 38.9 Dem, 61.1 Rep.
11 (chartreuse): 45.7 White, 47.1 Black; 78.3 Obama, 20.4 McCain; 69.1 Dem, 30.9 Rep.
12 (cornflower blue): 45.1 White, 46.7 Black; 74.6 Obama, 24.2 McCain; 65.9 Dem, 34.1 Rep.
13 (dark salmon): 64.2 Obama, 34.1 McCain; 56 Dem, 44 Rep.