Democratic Convention Watch: DCW Presidential Forecast – June 28


Saturday, June 28, 2008

DCW Presidential Forecast – June 28

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This is the DemConWatch Presidential Forecast, a summary of the best election projections on the web. Please also check out our Senate Forecast, and the House Forecast will be introduced later this month.

Update 6/28: Latest projection: Obama leads 301-237, up 2 from the last forecast of 299-239. 538.com made another major change to its algorithm, assuming that the race will naturally tighten. This had the effect of bringing Obama’s state numbers down across the board and changed their estimate of Obama’s EVs from 344 to 310, and 538.com is no longer an outlier on the Obama side. But this was balanced out and more by movement towards Obama in a number of states in different projections, especially in GA, MI, MN, TX and WI, giving Obama an overall +2 EVs on average. A history chart is at the bottom of this post.

Map showing consensus of sources. This table will show a state Blue or Red if a majority of the sources show it Leaning or Solid for that candidate. Changes: MI moves to Obama, NC moves to McCain.

<p><strong>><a href=’http://www.washingtonpost.com/wp-srv/politics/interactives/campaign08/electoral-college/’>Electoral College Prediction Map</a></strong> – Predict the winner of the general election. Use the map to experiment with winning combinations of states. Save your prediction and send it to friends.</p>
Unanimous solid states, not shown in the table below:
Solid Obama: CA, DC, HI, IL, MD, NY, RI, VT – 131 EVs.
Solid McCain: AL, ID, KY, OK, TN, UT, WY – 47 EVs

The sources are sorted by each projection’s estimate of Obama’s Electoral Votes (Algorithm determined below). The states are sorted by the number of electoral votes.

DCW General Election Tracker
State EVs Elect. Proj. Open Left EV.
com
538.com RCP RM CNN NBC FHQ ….
Date 6/27 6/28 6/28 6/28 6/28 6/28 6/27 6/5 6/25
Obama (O) 207 194 172 203 146 200 153 153 153
Obama-Lean (OL) 77 99 57 90 92 84 78 47 54
Tossup (T) 95 77 153 29 137 14 113 138 129
McCain-Lean (ML) 89 83 85 86 70 66 69 84 71
McCain (M) 70 85 71 127 93 174 125 116 131
Obama Total 284 293 229 293 238 284 231 200 207
McCain Total 159 168 156 213 163 240 194 200 202
Obama Est. 334 328 311 310 302 287 286 276 275
Texas 34 ML ML ML M ML M M M M
Florida 27 T T T ML T ML T T ML
Pennsylvania 21 OL OL T OL OL OL OL T T
Ohio 20 OL OL T OL T OL T T T
Michigan 17 OL OL OL OL T OL T T T
Georgia 15 T ML T ML ML M ML ML ML
New Jersey 15 O O OL O OL O OL OL OL
N. Carolina 15 T T T ML T ML ML ML ML
Virginia 13 T T T T T ML T T T
Massachusetts 12 O O O O O O O O OL
Indiana 11 ML ML ML T T M ML ML T
Missouri 11 T T T ML T ML T ML T
Washington 11 O O O O OL O OL OL O
Arizona 10 ML M M M M M M M M
Minnesota 10 O O OL O OL O OL OL OL
Wisconsin 10 O OL O O OL OL OL T T
Colorado 9 T OL T OL T T T T T
Louisiana 9 ML M ML ML ML M ML ML M
S. Carolina 8 ML ML ML M M M M M ML
Conn. 7 O O T O OL O O O O
Iowa 7 OL OL OL OL OL OL T T OL
Oregon 7 OL OL T OL OL O OL OL OL
Arkansas 6 ML M ML M M M ML ML M
Kansas 6 M ML M M M M M M M
Mississippi 6 ML ML ML M ML M M ML M
Nebraska 5 M M M M M M M ML M
Nevada 5 T T T T T T T T T
New Mexico 5 OL OL OL OL T OL ML T T
W. Virginia 5 ML M ML M M M ML M M
Maine 4 O O O O OL O OL OL O
NH 4 O O O OL T OL T T T
Alaska 3 M T T ML ML M M M ML
Delaware 3 O OL OL O O O O O OL
Montana 3 M ML ML M ML M ML ML ML
N. Dakota 3 M T ML ML M M M ML T
S. Dakota 3 M M M ML M M M M M
Elect. Proj. Open Left EV.
com
538.com RCP RM CNN NBC FHQ ….

Notes:
538 – FiveThirtyEight – Safe and Likely mapped to Strong (O or M), Lean to Lean (OL or ML), Tossup to Tossup (T)
CNN – Safe mapped to Strong, Leaning to Lean, Tossup to Tossup
Elect. Proj. – Election Projection – Solid and Strong mapped to Strong, Moderate to Lean, Weak to Tossup
EV.com – Electoral-Vote.com – Strong mapped to Strong, Weak to Lean, Barely and Tossup to Tossup
FHQ – FrontLoading HQ – Solid mapped to Strong, Lean to Lean, Tossup (Dem and Rep) to Tossup
NBC – Base mapped to strong, Lean to Lean, Tossup to Tossup
OpenLeft – Solid mapped to Strong, Lean to Lean, Tossup to Tossup
RM – Rasmussen – Safe and Likely mapped to Strong, Lean to Lean, Tossup to Tossup
RCP – RealClearPolitics – Solid mapped to Strong, Lean to Lean, Tossup to Tossup

Here are the states that span 3 categories.

  • Alaska: 2 at Tossup, 4 at McCain-Strong. Rasmussen’s own poll shows McCain only up by 4, yet they still have AK as Likely-Republican, which we convert to McCain-Strong.
  • Connecticut: Only Electoral-vote.com having it as a toss-up – that likely won’t last. The only poll in the last 3 months showed Obama at +3 in late May.
  • Georgia: 2 at Tossup, Rasmussen still has it as McCain-Strong.
  • Indiana: Rasmussen again the holdout at McCain-Strong.
  • Minnesota: With Survey USA out on June 16 with a poll showing Obama only up by 1, CNN’s projection of a Tossup doesn’t look like as much of an outlier. CNN moves to Obama-Lean.
  • Montana: 538 now has it as a Tossup. 2 Projections have it as Strong-McCain. Last poll was in April.
  • New Hampshire: Three projections have this former? battleground state at Obama-Strong.
  • New Mexico: Five projections have it as Obama-Lean, CNN has it at McCain-Lean. Two recent polls show Obama up by 3 and 8 points.
  • North Dakota – Two have it as tossup – that won’t last. Or will it? There hasn’t been a state poll in ND since April.
  • Oregon – One of the few Obama states that seems to be closing, with Obama only up by 3 in the latest SurveyUSA poll. 1 Tossup, 1 Obama-Strong.
  • South Dakota: 538 has it as Tossup.
  • Virgina (New): 538 has it as Obama-Lean, Rasmussen at McCain-Lean
  • West Virginia: 538 has it as Tossup.
  • Wisconsin: Electoral-Vote.com is the first to move this former battleground state to Obama-Strong.

We’re purposely ignoring Maine and Nebraska CD splits for now to keep things simple. We’ll add them in later if we need to.

The overall projection is just a straight average of each projections’ estimate of Electoral Votes (EVs) for each candidate. For each projection other than FiveThirtyEight, we give Obama 100% of the EVs in a state that is solid for him, 80% of the EVs for a leaner, 50% of the EVs for a Tossup, 20% of the EVs for state that is McCain-Lean, and 0% of the Solid McCain states. Exact opposite for McCain. For FiveThirtyEight, we use their overall estimate of Obama’s EVs, not the state-by-state categories.


DCW Presidential Forecast – June 282008-06-28T21:53:00-04:00MattGeneral Election|Presidential Forecast|