Calculating the Projected Electoral Vote

Oct. 26, 2012

The 2012 Election Forecast Simulation Model calculates the projected electoral vote in three ways.

1. Snapshot EV: The state electoral vote goes to the projected leader based on the pre-election poll. This is a *crude estimate *in close races in which the projected margin is within 1-3%.

2. Expected EV: The probability of winning each state is calculated using the poll-based projection. The theoretical forecast electoral vote is the weighted sum of the state win probabilities and corresponding electoral votes. EV= ∑ P(i) * EV (i), i =1,51 states. *This is the best estimate for the projected Electoral Vote.*

3. Simulation Mean EV: The mean electoral vote is a simple average of the simulated trial elections. It calculated mean approaches the theoretical expected EV as the number of trials increase (500 is sufficient), illustrating the *Law of Large Numbers*. A Monte Carlo simulation is needed to calculate the probability of winning the election. It is simply the number of winning trials divided by 500.

The Final Nov.6 model forecast that Obama would have a 332 Snapshot EV (exactly matching his actual EV), a 320.7 Expected EV and 320.8 Simulation Mean EV. But the Expected EV is a superior forecast tool since it eliminates the need for stating that “the states are too close to call”.

Published 10/27/12:

Matrix of Deceit: Forcing Pre-election and Exit Polls to Match Fraudulent Vote Counts

Election Model Forecast; Post-election True Vote Model

2004 Election Model (2-party shares)

Kerry 51.8%, 337 EV (snapshot)

State exit poll aggregate: 51.7%, 337 EV

Recorded Vote: 48.3%, 255 EV

True Vote Model: 53.6%, 364 EV

2008 Election Model

Obama 53.1%, 365.3 EV (simulation mean);

Recorded: 52.9%, 365 EV

State exit poll aggregate: 58.0%, 420 EV

True Vote Model: 58.0%, 420 EV

2012 Election Model

Obama Projected: 51.6% (2-party), 332 EV snapshot; 320.7 expected; 321.6 mean

Adjusted National Exit Poll (recorded): 51.0-47.2%, 332 EV

True Vote Model 56.1%, 391 EV (snapshot); 385 EV (expected)

Unadjusted State Exit Polls: not released

Unadjusted National Exit Poll: not released

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