The Exit Poll Response Optimizer confirms the USCV simulation.
These are the basic results.
1. E-M (WPE) and the Bush 51.23% 2-party vote are impossible
to obtain, given the overall R=53% response rate, alpha= 1.12
(56 Kerry/ 50 Bush) and 1250 precinct partisanship aggregate
weightings.
2. There is NO feasible solution which can satisfy the E-M
constraints.
3. Minimum alpha required is an implausible 1.15 (57.5/50)
4. Minimum High Bush precinct alpha is an implausible 1.40
(70/50)
5. High and moderate Kerry precinct alpha = 1.066 (53.5/50 –
which essentially matches the exit poll result)
6. High and moderate Bush precinct alpha = 1.17. Non-partisan
precinct alpha is the same 1.17.
7. Kerry won exit poll with 52.16%, a 63.1- 57.9mm vote
margin.
8. Bush needed to win 54.9% of the 47% who refused to be
polled, in order to achieve his 51.23% vote.
9. The results match E-M partisanship WPE's to within .01%.
10. The optimization input consisted only of the limited data
provided by E-M.
11. Assuming a 1.0% MoE, the odds are 1 in 62,956,149,427 that
Bush would go from 47.84% in the poll to 51.23% in the vote.
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EXIT POLL RESPONSE OPTIMIZATION MODEL
6/19/05 5:23 PM
OBJECTIVE:
Determine values of constrained variables required to derive
the final vote using aggregate exit poll response
data.
Precinct Variable Input Range (Min, Max) Constraints:
1-Response rates: equate to weighted average
2-Kerry 2-party percentage vote
3-Alpha (K/B): equate to weighted average
4-WPE: input (optional: Min= Max= E-M)
VOTE POLL DEV
Kerry 48.77% 52.16% -3.39%
Bush 51.23% 47.84% 3.39%
Actual Bush 51.23%
Probability: 1 in 62,956,149,427
WEIGHTED AVERAGE
Response 53.0%
Alpha (K/B) 1.150
RESPONSE INPUT CONSTRAINTS
1250 Strong Bush Strong Kerry
Prcts 40 415 540 165 90
KERRY WIN%
Min 0% 25% 45% 55% 75%
Max 25% 45% 55% 75% 100%
RESPONSE
Min 0% 0% 0% 0% 0%
Max 100% 100% 100% 100% 100%
ALPHA (K/B)
Min 0.90 0.90 0.90 0.90 0.90
Max 1.40 1.40 1.40 1.40 1.40
WPE
E-M -10.0% -6.1% -8.5% -5.9% 0.3%
Min -10.0% -6.1% -8.5% -5.9% 0.3%
Max -10.0% -6.1% -8.5% -5.9% 0.3%
OPTIMIZER OUTPUT SUMMARY
EXIT POLL / VOTE DEVIATION
Poll Vote Diff Poll Vote Diff (mm)
Kerry 52.16% 48.77% -3.39% 63.11 59.01 -4.10
Bush 47.84% 51.23% 3.39% 57.89 61.99 4.10
CATEG. HighB Bush Even Kerry HighK Total/Avg
Number 40 415 540 165 90 1250
Pct 3.2% 33.2% 43.2% 13.2% 7.2% 100.0%
RESP. 51.0% 58.8% 48.5% 48.3% 63.0% 53.0%
Dev -2.0% 5.8% -4.5% -4.7% 10.0% 0.0%
ALPHA
K/B 1.40 1.15 1.17 1.10 1.00 1.150
Dev 21.7% -0.4% 2.1% -4.0% -13.4% 0.0%
ln (A) 0.34 0.14 0.16 0.10 0.00 0.1398
VOTES
Kerry 25.0% 41.9% 48.7% 56.6% 77.0% 48.77%
Bush 75.0% 58.1% 51.3% 43.4% 23.0% 51.23%
POLL
Kerry 30.0% 44.9% 53.0% 59.5% 76.9% 52.16%
Bush 70.0% 55.1% 47.0% 40.5% 23.1% 47.84%
WPE -10.00% -6.1% -8.5% -5.9% 0.3% -6.77%
E-M -10.00% -6.1% -8.5% -5.9% 0.3% -6.77%
Diff 0.00% 0.0% 0.0% 0.0% 0.0% 0.0%
OPTIMIZATION MODEL
Categ. HighB Bush Even Kerry HighK Total/Avg
Prcts 40 415 540 165 90 1250
Kerry 25.0% 41.9% 48.7% 56.6% 77.0% 48.77%
ALPHA 1.40 1.15 1.17 1.10 1.00 1.15
ln(a) 0.34 0.14 0.16 0.10 0.00 0.14
AvgDev 22% 0% 2% -4% -13% 0%
RESPONDERS
Total 20 244 262 80 57 663
Pct 51.0% 58.8% 48.5% 48.3% 63.0% 53.00%
Kerry 6 110 139 47 44 345
Pct 30.0% 44.9% 53.0% 59.5% 76.9% 52.16%
Bush 14 134 123 32 13 317
Pct 70.0% 55.1% 47.0% 40.5% 23.1% 47.84%
REFUSERS
Total 20 171 278 85 33 587
Pct 49.0% 41.2% 51.5% 51.7% 37.0% 47.00%
Kerry 4 64 124 46 26 264
Pct 19.8% 37.5% 44.7% 53.8% 77.3% 45.09%
Bush 16 107 154 39 8 323
Pct 80.2% 62.5% 55.3% 46.2% 22.7% 54.91%
TOTAL VOTES
Kerry 10 174 263 93 69 610
Pct 25.0% 41.9% 48.7% 56.6% 77.0% 48.77%
Bush 30 241 277 72 21 640
Pct 75.0% 58.1% 51.3% 43.4% 23.0% 51.23%
2-PARTY VOTE (mm)
TOTAL 3.87 40.17 52.27 15.97 8.71 121.00
Kerry 0.97 16.83 25.47 9.04 6.71 59.01
Bush 2.90 23.35 26.80 6.93 2.00 61.99
Diff -1.94 -6.52 -1.34 2.10 4.71 -2.98
EXIT POLL VOTE (mm)
Kerry 1.16 18.05 27.69 9.51 6.70 63.11
Bush 2.71 22.12 24.58 6.46 2.01 57.89
Diff -1.55 -4.07 3.11 3.05 4.68 5.22
VOTE DEVIATION
Kerry -0.19 -1.23 -2.22 -0.47 0.01 -4.10
WPE
Kv-Bv -50.0% -16.2% -2.6% 13.2% 54.1% -2.46%
Kp-Bp -40.0% -10.1% 5.9% 19.1% 53.8% 4.31%
Diff -10.0% -6.1% -8.5% -5.9% 0.3% -6.77%
E-M -10.0% -6.1% -8.5% -5.9% 0.3% -6.77%