Poll Analysis: McCain Gains Back a Little Ground on Obama

Obama McCain
94.8% probability of winning 4.4% probability of winning
Mean of 298 electoral votes Mean of 240 electoral votes

Electoral College Map

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With the addition of six new polls today, Sen. Barack Obama slips a bit in his competition against Sen. John McCain.

Yesterday’s analysis gave him a 97.4% probability of defeating McCain. Today, after 10,000 simulated elections, Obama wins 9,483 times, plus 74 times for ties. McCain wins 442 times. Thus, if a general election were held today, we would expect Obama to have a 94.8% probability (plus an additional 0.7% probability for ties) of defeating McCain.

Here is the distribution of electoral votes from the simulations:

  • 10000 simulations: Obama wins 94.8%, McCain wins 4.4%.
  • Average ( SE) EC votes for Obama: 298.0 ( 16.7)
  • Average (SE) EC votes for McCain: 240.0 ( 16.7)
  • Median (95% CI) EC votes for Obama: 301 (266, 322)
  • Median (95% CI) EC votes for McCain: 237 (216, 272)
State EC Votes # polls Total Votes % Obama % McCain Obama %wins McCain %wins
Alabama 9 1 521 39.3 60.7 0.0 100.0
Alaska 3 0 (0) (100)
Arizona 10 1 480 43.8 56.3 0.7 99.3
Arkansas 6 0 (0) (100)
California 55 1 486 64.2 35.8 100.0 0.0
Colorado 9 1 425 54.1 45.9 95.6 4.4
Connecticut 7 1* 1198 54.8 45.2 100.0 0.0
Delaware 3 0 (100) (0)
D.C. 3 0 (100) (0)
Florida 27 2 1258 46.0 54.0 0.4 99.6
Georgia 15 1 523 45.5 54.5 2.3 97.7
Hawaii 4 0 (100) (0)
Idaho 4 0 (0) (100)
Illinois 21 0 (100) (0)
Indiana 11 1 450 44.4 55.6 0.9 99.1
Iowa 7 3 1519 56.0 44.0 100.0 0.0
Kansas 6 1 483 46.8 53.2 6.7 93.3
Kentucky 8 1 502 40.8 59.2 0.0 100.0
Louisiana 9 0 (0) (100)
Maine 4 0 (100) (0)
Maryland 10 1* 450 53.3 46.7 92.7 7.3
Massachusetts 12 1 511 51.1 48.9 70.9 29.1
Michigan 17 1 430 54.7 45.3 97.0 3.0
Minnesota 10 2 969 58.1 41.9 100.0 0.0
Mississippi 6 0 (0) (100)
Missouri 11 2 911 51.3 48.7 78.9 21.1
Montana 3 0 (0) (100)
Nebraska 5 0 (0) (100)
Nevada 5 1 440 56.8 43.2 99.6 0.4
New Hampshire 4 1 425 57.6 42.4 99.8 0.2
New Jersey 15 1 1532 54.1 45.9 100.0 0.0
New Mexico 5 2 920 54.1 45.9 99.6 0.4
New York 31 2 1034 57.4 42.6 100.0 0.0
North Carolina 15 2 1266 45.5 54.5 0.0 100.0
North Dakota 3 0 (0) (100)
Ohio 20 4 3261 49.8 50.2 41.4 58.6
Oklahoma 7 0 (0) (100)
Oregon 7 3 1284 53.2 46.8 98.7 1.3
Pennsylvania 21 4 3753 52.2 47.8 100.0 0.0
Rhode Island 4 1 532 58.3 41.7 100.0 0.0
South Carolina 8 0 (0) (100)
South Dakota 3 0 (0) (100)
Tennessee 11 1* 469 44.3 55.7 1.0 99.0
Texas 34 2 2755 45.7 54.3 0.0 100.0
Utah 5 0 (0) (100)
Vermont 3 1 372 61.3 38.7 100.0 0.0
Virginia 13 2 987 50.4 49.6 59.2 40.8
Washington 11 2 783 58.6 41.4 100.0 0.0
West Virginia 5 0 (0) (100)
Wisconsin 10 3 1652 52.0 48.0 95.0 5.0
Wyoming 3 0 (0) (100)

* denotes that an older poll was used

Details of the methods are given here.

The most recent analysis in this and other match-ups can be found from this page.

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