Audit Results Report

Full details and procedures and the open source ElectionAudits code used for the 2008 Boulder County audit are available at
http://bcn.boulder.co.us/~neal/elections/boulder-audit-08-11/

Selected Audit Units

A total of 65 audit units were audited. Some audit units were randomly selected, as part of a contest that was randomly selected for a risk-sensitive audit. Other audit units were manually targeted as being of interest for a particular reason. The manually targeted units are listed after all the randomly selected ones.

The randomly selected units were chosen according to a plan that incorporated the auditing statistics described on the Contest pages (linked to from each audit unit). It selected the appropriate number of units for each selected contest randomly, but with their chance of selection proportional to their size (the number of "contest ballots" - ballots on which the contest appeared). That was done as follows. First the canvass board came up with the following 15 rolls of 10-sided dice: 702758241994347. The random selection was then based on the "Sum of Square Roots" pseudorandom number generator, using the dice throws for the random seed value. That means that you can check each and every step that led from the statistics and dice throws to the final selections with a simple calculator.

Statistics

Totals

Selections and Targeting

Auditing

Detailed results

For each audit unit in the detailed results below, the counts for each choice are listed - first the reported count, then the hand count.

Contest Margin Confidence % Units to audit: NEGEXP Type Batches Ballots Contest Ballots Choice, reported, manual
PRESIDENTIAL ELECTORS 8.090 99 1.3 AB p174_mb_152 739 739 Barack Obama / Joe Biden Democratic 500 500 John McCain / Sarah Palin Republican 227 227 Other 9 7 Over 0 2 Under 3 3
PRESIDENTIAL ELECTORS 8.090 99 1.3 AB p199_mb_177 486 486 Barack Obama / Joe Biden Democratic 355 355 John McCain / Sarah Palin Republican 123 122 Other 6 7 Over 0 0 Under 2 2
AMENDMENT 47 11.000 99 1.0 AB p174_mb_152 739 729 NO 430 431 Over 0 0 Under 29 28 YES 270 269
AMENDMENT 46 1.400 99 6.5 AB p174_mb_152 739 729 NO 413 413 Over 0 1 Under 31 30 YES 285 285
AMENDMENT 46 1.400 99 6.5 AB p199_mb_177 486 486 NO 286 286 Over 0 0 Under 21 20 YES 179 180
AMENDMENT 46 1.400 99 6.5 AB p098_mb_015 494 494 NO 286 286 Over 0 0 Under 35 35 YES 173 173
AMENDMENT 46 1.400 99 6.5 AB p073_mb_061 495 484 NO 300 301 Over 0 0 Under 23 22 YES 161 162
AMENDMENT 46 1.400 99 6.5 AB p200_mb_162 744 741 NO 479 479 Over 1 1 Under 31 29 YES 230 228
AMENDMENT 46 1.400 99 6.5 AB p227_mb_222 1716 1699 NO 993 991 Over 0 0 Under 135 134 YES 571 571
AMENDMENT 46 1.400 99 6.5 EV p016_mb_053 496 496 NO 291 291 Over 0 0 Under 55 55 YES 150 150
AMENDMENT 54 2.600 99 3.8 AB p174_mb_152 739 729 NO 384 385 Over 0 0 Under 40 39 YES 305 304
AMENDMENT 54 2.600 99 3.8 AB p199_mb_177 486 486 NO 257 256 Over 0 0 Under 26 25 YES 203 204
AMENDMENT 54 2.600 99 3.8 AB p098_mb_015 494 494 NO 274 275 Over 0 0 Under 46 46 YES 174 173
AMENDMENT 54 2.600 99 3.8 AB p073_mb_061 495 484 NO 279 280 Over 0 0 Under 25 25 YES 180 180
REFERENDUM O 5.200 98 1.7 AB p174_mb_152 739 729 NO 268 268 Over 0 0 Under 59 59 YES 402 402
REFERENDUM O 5.200 98 1.7 AB p199_mb_177 486 486 NO 161 161 Over 0 0 Under 47 47 YES 278 278
AMENDMENT 49 21.400 99 0.5 AB p174_mb_152 739 729 NO 439 438 Over 0 0 Under 34 33 YES 256 257
REFERENDUM L 7.600 99 1.4 AB p174_mb_152 739 729 NO 293 292 Over 0 0 Under 52 52 YES 384 386
REFERENDUM L 7.600 99 1.4 AB p199_mb_177 486 486 NO 180 181 Over 0 0 Under 26 26 YES 280 279
STATE REPRESENTATIVE - DISTRICT 33 11.500 75 2.4 AB p174_mb_152 739 64 Dianne Primavera Democratic 37 37 Nick Kliebenstein Republican 25 25 Over 0 0 Under 2 2
STATE REPRESENTATIVE - DISTRICT 33 11.500 75 2.4 AB p199_mb_177 486 22 Dianne Primavera Democratic 12 12 Nick Kliebenstein Republican 10 10 Over 0 0 Under 0 0
STATE REPRESENTATIVE - DISTRICT 33 11.500 75 2.4 AB p073_mb_061 495 36 Dianne Primavera Democratic 22 22 Nick Kliebenstein Republican 11 11 Over 0 0 Under 3 3
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p174_mb_152 739 91 NO 32 32 Over 0 0 Under 3 3 YES 56 56
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p199_mb_177 486 33 NO 19 19 Over 0 0 Under 1 1 YES 13 13
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p098_mb_015 494 34 NO 15 15 Over 0 0 Under 1 1 YES 18 18
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p073_mb_061 495 32 NO 17 17 Over 0 0 Under 1 1 YES 14 14
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 ED p158_mb_137 537 221 NO 92 92 Over 0 0 Under 21 21 YES 108 108
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p227_mb_222 1716 123 NO 57 57 Over 1 1 Under 8 8 YES 57 57
CITY OF LAFAYETTE BALLOT ISSUE 2A 8.235 75 6.6 AB p058_mb_002 498 57 NO 23 23 Over 0 0 Under 1 1 YES 33 32
CITY OF BOULDER BALLOT QUESTION NO. 2A 9.882 38 1.9 AB p174_mb_152 739 134 AGAINST THE MEASURE 62 60 FOR THE MEASURE 47 46 Over 0 0 Under 25 25
CITY OF BOULDER BALLOT QUESTION NO. 2A 9.882 38 1.9 AB p098_mb_015 494 217 AGAINST THE MEASURE 89 89 FOR THE MEASURE 68 68 Over 0 0 Under 60 60
CITY OF LAFAYETTE BALLOT ISSUE 2B 20.179 75 2.7 AB p174_mb_152 739 91 NO 28 28 Over 0 0 Under 6 6 YES 57 57
CITY OF LAFAYETTE BALLOT ISSUE 2B 20.179 75 2.7 AB p199_mb_177 486 33 NO 13 13 Over 0 0 Under 1 1 YES 19 19
CITY OF LAFAYETTE BALLOT ISSUE 2B 20.179 75 2.7 AB p098_mb_015 494 34 NO 17 17 Over 0 0 Under 2 2 YES 15 15
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p174_mb_152 739 225 NO 96 95 Over 0 0 Under 15 15 YES 114 114
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p199_mb_177 486 122 NO 55 55 Over 0 0 Under 6 6 YES 61 61
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p098_mb_015 494 119 NO 57 57 Over 0 0 Under 10 10 YES 52 52
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p073_mb_061 495 80 NO 35 35 Over 0 0 Under 8 7 YES 37 37
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p365_mb_323 492 186 NO 74 74 Over 1 1 Under 21 21 YES 90 90
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 EV p292_ev_282 766 645 NO 273 273 Over 0 0 Under 79 79 YES 293 293
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 EV p099_ev_065 458 188 NO 60 60 Over 0 0 Under 23 23 YES 105 105
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p227_mb_222 1716 279 NO 117 117 Over 0 0 Under 39 39 YES 123 123
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p224_mb_165 741 198 NO 88 88 Over 0 0 Under 17 17 YES 93 93
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 20 9.4 AB p360_mb_308 494 138 NO 68 68 Over 0 0 Under 11 11 YES 59 59
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p174_mb_152 739 134 AGAINST THE MEASURE 56 56 FOR THE MEASURE 54 54 Over 0 0 Under 24 24
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p098_mb_015 494 217 AGAINST THE MEASURE 80 80 FOR THE MEASURE 83 83 Over 0 0 Under 54 54
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p199_mb_177 486 143 AGAINST THE MEASURE 55 55 FOR THE MEASURE 64 64 Over 0 0 Under 24 24
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p073_mb_061 495 191 AGAINST THE MEASURE 107 107 FOR THE MEASURE 64 64 Over 0 0 Under 20 20
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 EV p016_mb_053 496 367 AGAINST THE MEASURE 101 101 FOR THE MEASURE 106 106 Over 1 1 Under 159 159
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p200_mb_162 744 327 AGAINST THE MEASURE 125 126 FOR THE MEASURE 157 157 Over 0 0 Under 44 45
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p227_mb_222 1716 670 AGAINST THE MEASURE 264 265 FOR THE MEASURE 264 263 Over 0 0 Under 142 141
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 ED j396_ed_142 19 19 AGAINST THE MEASURE 4 4 FOR THE MEASURE 5 5 Over 0 0 Under 10 10
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 ED j327_ed_054 14 7 AGAINST THE MEASURE 4 4 FOR THE MEASURE 1 1 Over 0 0 Under 2 2
CITY OF BOULDER BALLOT QUESTION NO. 2D 1.955 39 9.9 AB p313_mb_290 494 218 AGAINST THE MEASURE 90 90 FOR THE MEASURE 84 84 Over 0 0 Under 44 43
PRESIDENTIAL ELECTORS 8.090 EV p296_ev_288 144 144 Barack Obama / Joe Biden Democratic 138 137 John McCain / Sarah Palin Republican 5 5 Other 1 1 Over 0 0 Under 0 0
UNITED STATES SENATOR 9.740 AB p116_mb_124 493 493 Bob Schaffer Republican 109 110 Mark Udall Democratic 359 360 Other 15 17 Over 0 0 Under 10 10
UNITED STATES SENATOR 9.740 AB p250_mb_209 497 497 Bob Schaffer Republican 151 149 Mark Udall Democratic 314 311 Other 18 18 Over 0 0 Under 14 14
REPRESENTATIVE TO THE 111TH UNITED STATES CONGRESS - DISTRICT 4 11.750 EV p084_mb_045 907 179 Betsy Markey Democratic 132 132 Marilyn N. Musgrave Republican 41 41 Over 0 0 Under 6 6
REPRESENTATIVE TO THE 111TH UNITED STATES CONGRESS - DISTRICT 4 11.750 AB p244_ev_208 412 359 Betsy Markey Democratic 251 251 Marilyn N. Musgrave Republican 94 94 Over 0 0 Under 14 14
JUSTICE OF THE COLORADO SUPREME COURT Allison H. Eid 37.702 AB p116_mb_124 493 493 NO 76 75 Over 0 0 Under 107 106 YES 310 311
JUSTICE OF THE COLORADO SUPREME COURT Allison H. Eid 37.702 AB p250_mb_209 497 497 NO 71 69 Over 0 0 Under 156 159 YES 270 269
REFERENDUM L 7.600 AB p098_mb_015 494 494 NO 191 191 Over 0 0 Under 55 55 YES 248 248
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 ED p158_mb_137 537 305 NO 113 113 Over 0 0 Under 43 43 YES 149 149
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 AB p229_mb_179 491 120 NO 33 33 Over 0 0 Under 8 8 YES 79 79
CITY OF LONGMONT BALLOT QUESTION 2A 0.913 ED p187_ed_191 330 179 NO 57 57 Over 0 0 Under 11 11 YES 111 111