Presidential Forecast, 8/21: Obama drops below 270

by: Chris Bowers

Thu Aug 21, 2008 at 15:04


Electoral College: Obama 260, McCain 221, Toss-up 57 (270 to win)
National popular vote: Obama 44.7%-43.3% McCain


(Dark Blue (183): Obama +7.6% or more
Lean Blue (77): Obama +2.6%-+7.5%
White / Toss-up (57): Obama +2.5% to McCain +2.5%
Lean Red (70): McCain +2.6%-+7.5%
Dark Red (151): McCain +7.6% or more
)

New polls from Florida, Maryland, Minnesota, Nevada, New Hampshire (2), North Carolina and Pennsylvania. The polls are coming fast and thick now (hmmm... can I write that in public?) but the map remains very similar to yesterday's. New Hampshire moves from "Lean Obama" to "Toss-up," while Wisconsin moves from "Solid Obama" to "Lean Obama." Colorado also drops to a dead heat, pushing Obama below 270 electoral votes for the first time in four or five months. More positively, Minnesota moves back into Obama's base category, after only one day on the swing state chart:

Swing State Overview (270 to win, 269 to tie)
State EV's Obama % McCain % Margin Obama Total
Obama Base 243 243
Michigan 17 47.0% 43.7% +3.3% 260
New Hampshire 4 46.5% 45.5% +1.0% 264
Colorado 9 45.7% 45.7% Even 273
Montana 3 47.0% 47.0% Even 276
Virginia 13 46.3% 47.0% -0.7% 289
Nevada 5 44.5% 45.5% -1.0% 294
Ohio 20 44.7% 45.7% -1.0% 314
Alaska 3 43.7% 45.0% -1.3% 317
Florida 27 44.3% 47.0% -2.7% 344
North Dakota 3 42.0% 45.0% -3.0% 347
Missouri 11 44.0% 48.0% -4.0% 358
South Dakota 3 40.0% 44.0% -4.0% 361
North Carolina 15 43.2% 47.3% -4.1% 376
McCain Base 162 162

If every state was pushed to choose a candidate, right now, based on the current averages, the score is Obama 264, McCain 262, and 12 in the toss-up category. Of course, that is based on McCain running the table in several states that are currently well within the margin of error--Alaska, Montana, Nevada, Ohio, and Virginia. Still, we are basically talking about a dead heat entering the conventions, with Obama holding only the most narrow of leads.

State by state details in the extended entry.

Chris Bowers :: Presidential Forecast, 8/21: Obama drops below 270
Solid Obama: 183 Electoral Votes
State EV's Obama % McCain % Margin # Polls
California 55 52.0% 34.0% +18.0% 3
Connecticut 7 54.0% 37.5% +16.5% 2
Delaware 3 50.0% 41.0% +9.0% 1
D.C. 3 -- -- +80.0% 0
Hawaii 4 61.0% 31.0% +30.0% 1
Illinois 21 52.5% 38.5% +14.0% 2
Maine-AL* 2 51.0% 40.0% +11.0% 2
Maine-01* 1 -- -- +14.2% 0
Maine-02* 1 -- -- +7.8% 0
Maryland 10 53.0% 43.0% +10.0% 1
Massachusetts 12 50.5% 38.0% +12.5% 2
New Jersey 15 51.5% 41.5% +10.0% 2
New York 31 53.0% 37.0% +16.0% 3
Rhode Island 4 55.0% 31.0% +24.0% 1
Vermont 3 63.0% 29.0% +34.0% 1
Washington 11 50.0% 39.5% +10.5% 4

Lean Obama: 77 Electoral Votes
State EV's Obama % McCain % Margin # Polls
Iowa 7 50.0% 42.7% +7.3% 3
Michigan 17 47.0% 43.7% +3.3% 3
Minnesota 10 48.0% 42.7% +5.3% 3
New Mexico 5 49.0% 43.0% +6.0% 1
Oregon 7 50.0% 43.5% +6.5% 2
Pennsylvania 21 47.8% 41.8% +6.0% 5
Wisconsin 10 47.3% 41.3% +6.0% 3

Toss-up: 57 Electoral Votes
State EV's Obama % McCain % Margin # Polls
Alaska 3 43.7% 45.0% -1.3% 3
Colorado 9 45.7% 45.7% Even 3
Montana 3 47.0% 47.0% Even 1
Nevada 5 44.5% 45.5% -1.0% 2
New Hampshire 4 46.5% 45.5% +1.0% 2
Ohio 20 44.7% 45.7% -1.0% 3
Virginia 13 46.3% 47.0% -0.7% 3

Lean McCain: 70 Electoral Votes
State EV's Obama % McCain % Margin # Polls
Florida 27 44.3% 47.0% -2.7% 7
Indiana 11 44.0% 50.0% -6.0% 1
Missouri 11 44.0% 48.0% -4.0% 4
North Carolina 15 43.2% 47.3% -4.1% 6
North Dakota 3 42.0% 45.0% -3.0% 1
South Dakota 3 40.0% 44.0% -4.0% 1

Solid McCain: 151 Electoral Votes
State EV's Obama % McCain % Margin # Polls
Alabama 9 36.0% 52.5% -16.5% 2
Arizona 10 39.0% 54.5% -15.5% 2
Arkansas 6 39.0% 52.0% -13.0% 1
Georgia 15 44.0% 53.0% -9.0% 1
Idaho 4 37.0% 53.0% -16.0% 1
Kansas 6 38.5% 52.0% -13.5% 2
Kentucky 8 38.3% 54.3% -16.0% 3
Louisiana 9 36.5% 55.5% -19.0% 2
Mississippi 6 42.0% 52.5% -10.5% 2
Nebraska-AL** 2 36.0% 55.0% -19.0% 1
Nebraska-01** 1 -- -- -13.0% 0
Nebraska-02** 1 -- -- -8.0% 0
Nebraska-03** 1 -- -- -37.0% 0
Oklahoma 7 24.0% 56.0% -32.0% 1
South Carolina 8 40.0% 53.0% -13.0% 1
Tennessee 11 36.0% 51.0% -15.0% 1
Texas 34 37.0% 46.5% -9.5% 2
Utah 5 31.0% 54.5% -23.5% 2
West Virginia 5 37.0% 45.0% -8.0% 1
Wyoming 3 40.0% 53.0% -13.0% 1

* Maine four electoral votes are awarded as follows: two for the statewide winner, and one for the winner of each congressional district. ME-01 is about 3.5% more Democratic than the state as a whole, while ME-02 is about 3.5% less Democratic than the state as a whole.

** Nebraska's five electoral votes are awarded as follows: two for the statewide winner, and one for the winner of each congressional district. NE-01 is about 6.0% more Democratic than the state as a whole, NE-02 is about 11.0% more Democratic than the state as a whole, and NE-03 is about 18.0% less Democratic than the state as a whole.

Methodology
The forecast is updated whenever there are enough new polls to warrant an update. The methodology for the forecast is simple and straightforward.

  1. For each state, all polls conducted entirely or partially within the last 30 days are included in the averages. There are two exceptions to this rule.
  2. The first exception are states where no polls were conducted entirely or partially in the last 30 days. Every state has at least one poll.
  3. The second exception comes with polling firms that have conducted more than one poll in a state over the last thirty days. Every polling firm only has one poll per average.
  4. No polling firm discrimination whatsoever. Polls are never excluded because the organization has a bad or partisan reputation.

As we move closer to the election and more data becomes available, the time frames for polls included in the averages will decrease.  


Tags: , , , (All Tags)
Print Friendly View Send As Email
Mistake in Nevada (0.00 / 0)
I thin pollster.com has the research 2000 numbers for Nevada backwards. It should be McCain 43 Obama 44. So your Nevada averages should be McCain 45.5% and Obama 44.5%. Down to a 1 point McCain advantage.

Thanks! (0.00 / 0)
You are right. Will update.

[ Parent ]
WI? (0.00 / 0)
Is that just due to cleaning out old polls?

Obama has an 87.5% chance of winning (4.00 / 1)
It's gonna come down to this: Obama will need to win one of Virginia, Ohio, or Colorado. If they are all true toss-ups on election day, his odds of losing all of them would be .5^3 = 12.5%. So the odds he'll win are 87.5%.

(This assumes Obama will win all Kerry states plus IA and NM. I think the odds of him doing so are overwhelming. (New Hampshire is a bit of a wild card, but that would only matter if Obama loses NH and wins CO, landing him at 269 ev's. Then it would go to the House, where Obama would almost certainly win anyway.))


Impressive (0.00 / 0)
I understand, Obama has a 87.5 chance of winning NOW? You obviously are pretty adept with mathematics, so could you pls do a trend analysis and give us the numbers for November?  

[ Parent ]
There's no trendlining (0.00 / 0)
that was just a back of the envelope calculation assigning a win probability of 50% to OH, VA and CO, with the extra assumption that the rest of the 2004 map would remain unchanged.  Under that scenario, Obama has a 87.5% chance of winning.  It would proably be less with a more sophisticated analysis, considering that the light blue accounts for more EV on that map than the light red does.

Of course, the conventions could totally change everything, anyway.


[ Parent ]
I know (0.00 / 0)
that's why I asked for it. Because the trend is negative, and it doesn't look like the numbers will stay that high.

[ Parent ]
Ha! (0.00 / 0)
That'd be waaaay beyond my abilities.

All I really meant to point out - like spot did below - is that it's likely to come down to CO, VA, and OH, with Obama needing to win one of the 3. The 87.5 is kind of a bullshit number, but it shows that if those three states are really toss-ups on election day, then Obama is really really likely to win.


[ Parent ]
Of course... (4.00 / 1)
They're not really separate events... If they're all true tossups and he loses one of them, the likelihood he loses the others goes up as well.

[ Parent ]
Y'all remember statistical leesons much better than me (0.00 / 0)
But now that you remind me, yes, I seem to remember that  checking if events are related or independent is necessary before calculating the chances. Thyx, good point, leshrac!

[ Parent ]
the problem is the assumption... (0.00 / 0)
that they are independent.   Look at the 2006 Senate races, where all the toss-ups went one way.  Or 2002 Senate races, when they went the other.



New Jersey politics at Blue Jersey.


[ Parent ]
I know, I know (0.00 / 0)
You and leshrac and Gray are all right, of course. I really meant to be making a rhetorical point, not a statistical one. So I probably should've left numbers out of it...

But the point is just this: throughout most of the campaign so far, the electoral map has been such that if Obama wins Virginia OR Ohio OR Colorado, he is very likely to win the election. McCain, meanwhile has to win Virginia AND Ohio AND Colorado to be likely to win the election. Since these three look like they'll be the tossiest of toss-ups, in the event of a close election, the advantage goes to Obama.


[ Parent ]
Still, a good point (0.00 / 0)
You're right, Obama's chances are still high. Let's hope the campaign gains traction again and keeps it that way!

[ Parent ]
well... (0.00 / 0)
it still looks like it will come down to Obama needing to take one out of Virginia, Ohio, or Colorado.

My general thoughts are that the conventions are going to make states bump back towards their Bush/Kerry numbers on a short term basis. Just that reflexively the campaign going negative and with both conventions showing overt partisanship (which is natural in a convention of course) it will make states tick back towards their old numbers. This will make it look like Obama had a disastrous campaign in the battleground states but in reality I think this is likely a short term effect.  


does anyone know (4.00 / 1)
whether pollsters plan to revise their likely voter screens this fall in light of the huge number of newly registered voters?

If I am not mistaken, some pollsters will take you out of their "likely voter" sample if you did not vote in the last presidential election.

Obama's enormous ground game (with nearly 30 field offices in Virginia and some 20 field offices in Indiana and North Carolina) should be able to give him a couple extra points in these states.

Join the Iowa progressive community at Bleeding Heartland.


Good point, but... (0.00 / 0)
...if the Obama campaign continues to be as lame and uninspiring as it is now, there will be not many new voters in November.

[ Parent ]
The polls just don't bear that out (0.00 / 0)
Enthusiasm for Obama is still high. Much more so than McCain.

[ Parent ]
I guess you didn't see the NE-02 poll that came out earlier this week. (0.00 / 0)
Donate to Open Left








Friends of the Earth thanks the OpenLeft community for the ideas you generate and your contributions to the progressive movement.

As an anti-spam measure, there is a 24-hour waiting period after registering before new users can comment.
blog advertising is good for you
blog advertising is good for you
SEARCH

   

Advanced Search