Contest List
Number of contests: 41. Contests selected for auditing are highlighted in yellow.
The auditing selection statistics are based on the Overall Margin percentage if it has been entered to reflect results from other counties. Otherwise the margin used for the statistics comes from the Margin calculated based on just the ballots reflected in the given report.
Information on two alternative auditing sampling methods is presented: SAFE (in which each audit unit has an equal chance of being picked). and NEGEXP (which provides more statistical signifigance for a given effort and requires selecting larger audit units with higher probability than smaller ones). The numbers given here are based on the given confidence level. I.e. they are designed so the audit will either 1) find a discrepancy and call for an escalation or full hand recount, or 2) reduce the risk of confirming an incorrect outcome to e.g. 25% (for a confidence level of 75%), even if the tally system has been manipulated. A maximum "within-precinct-miscount" of 20% is assumed. See On Auditing Elections When Precincts Have Different Sizes, by Javed A. Aslam, Raluca A. Popa and Ronald L. Rivest
| Contest Name | Audit Units | Overall Margin % | Margin % | Contest Seq | Threshold | Random | Priority | Confidence % | Proportion % | Units to audit: NEGEXP | Units to audit: SAFE | Ballots to audit: NEGEXP | Ballots to audit: SAFE |
| City of Boulder Council Candidates, Vote For 5 | 381 | 0.846 | 0.846 | 000001 | 1.18222 | 0.63601 | 1.85881 | 75 | 100 | 57.9 | 112.0 | 20724 | 27422 |
| City of Lafayette Council Candidates, Vote For 4 | 367 | 1.163 | 1.163 | 000002 | 0.86020 | 0.27023 | 3.18321 | 75 | 100 | 41.7 | 136.0 | 4077 | 6375 |
| City of Longmont Mayor | 406 | 7.210 | 000003 | 0.13870 | 0.55456 | 0.25010 | 75 | 100 | 7.6 | 22.0 | 661 | 1021 | |
| City of Longmont Council Member At-Large, Vote For 2 | 406 | 7.698 | 000004 | 0.12991 | 0.59450 | 0.21851 | 75 | 100 | 7.1 | 20.0 | 1239 | 1855 | |
| City of Longmont Council Member Ward 2 | 390 | 20.528 | 000005 | 0.04871 | 0.83193 | 0.05856 | 75 | 100 | 2.7 | 7.0 | 92 | 133 | |
| City of Louisville City Council Person Ward I (4 Years) | 282 | 24.833 | 000006 | 0.04027 | 0.24524 | 0.16421 | 75 | 100 | 2.2 | 7.0 | 37 | 44 | |
| City of Louisville City Council Person Ward II (4 Years) | 250 | 66.590 | 000007 | 0.01502 | 0.09577 | 0.15681 | 75 | 100 | 0.8 | 1.0 | 10 | 5 | |
| City of Louisville City Council Person Ward III (4 Years) | 263 | 23.067 | 000008 | 0.04335 | 0.24624 | 0.17605 | 75 | 100 | 2.4 | 7.0 | 34 | 43 | |
| Boulder Valley School District Director District B (4 Years) | 420 | 22.110 | 22.218 | 000009 | 0.04523 | 0.31757 | 0.14242 | 75 | 85 | 2.1 | 3.4 | 246 | 310 |
| Boulder Valley School District Director District E (4 Years) | 420 | 2.960 | 0.912 | 000010 | 0.33784 | 0.77427 | 0.43633 | 75 | 85 | 15.6 | 24.8 | 1792 | 2250 |
| Boulder Valley School District Director District F (4 Years) | 420 | 11.311 | 10.888 | 000011 | 0.08841 | 0.97463 | 0.09071 | 75 | 85 | 4.2 | 6.8 | 480 | 621 |
| Park School District R-3 School Director At Large (4 Years), Vote For 2 | 96 | 2.899 | 2.618 | 000012 | 0.34500 | 0.20189 | 1.70882 | 75 | 5 | 0.9 | 2.5 | 5 | 10 |
| St. Vrain Valley School District School Board Candidates (4 Years) Director District B | 423 | 17.456 | 17.832 | 000013 | 0.05729 | 0.68459 | 0.08368 | 75 | 84 | 2.6 | 5.9 | 257 | 343 |
| St. Vrain Valley School District School Board Candidates (4 Years) Director District C | 423 | 27.730 | 28.264 | 000014 | 0.03606 | 0.61025 | 0.05909 | 75 | 84 | 1.7 | 3.3 | 162 | 196 |
| St. Vrain Valley School District School Board Candidates (4 Years) Director District D | 423 | 58.169 | 56.527 | 000015 | 0.01719 | 0.13506 | 0.12729 | 75 | 84 | 0.8 | 0.8 | 77 | 49 |
| St. Vrain Valley School District School Board Candidates (4 Years) Director District F | 423 | 58.611 | 56.939 | 000016 | 0.01706 | 0.39070 | 0.04367 | 75 | 84 | 0.8 | 0.8 | 77 | 49 |
| Thompson School District R2-J Director District B (4 Years) | 53 | 70.990 | 45.588 | 000017 | 0.01409 | 0.48943 | 0.02878 | 75 | 0 | 0.0 | 0.0 | 0 | 0 |
| Thompson School District R2-J Director District D (2 Years) | 53 | 70.766 | 42.647 | 000018 | 0.01413 | 0.52789 | 0.02677 | 75 | 0 | 0.0 | 0.0 | 0 | 0 |
| Thompson School District R2-J Director District E (4 Years) | 53 | 14.391 | 22.059 | 000019 | 0.06949 | 0.58996 | 0.11779 | 75 | 0 | 0.0 | 0.0 | 0 | 0 |
| Thompson School District R2-J Director District F (4 Years) | 53 | 71.413 | 48.529 | 000020 | 0.01400 | 0.74901 | 0.01870 | 75 | 0 | 0.0 | 0.0 | 0 | 0 |
| Open Space Countywide 0.25% Sales and Use Tax Extension and $50M Bond Authorization Issue. | 424 | 4.038 | 000021 | 0.24766 | 0.06966 | 3.55518 | 75 | 100 | 13.5 | 14.0 | 2039 | 2087 | |
| ClimateSmart (CEOLID) $85M Bond Authorization. | 424 | 1.840 | 000022 | 0.54344 | 0.60917 | 0.89209 | 75 | 100 | 29.1 | 33.0 | 4387 | 4919 | |
| $6.1M Bond Authorization for Energy Conservation Projects. | 424 | 11.852 | 000023 | 0.08437 | 0.41858 | 0.20157 | 75 | 100 | 4.7 | 5.0 | 702 | 745 | |
| DA Term Limits Extension to Three Terms. | 424 | 0.035 | 000024 | 28.72818 | 0.54357 | 52.85089 | 75 | 100 | 413.1 | 318.0 | 61679 | 47402 | |
| Sales and Use Tax Extension | 381 | 34.632 | 000025 | 0.02887 | 0.02528 | 1.14231 | 75 | 100 | 1.6 | 2.0 | 117 | 98 | |
| Open Space General Obligation Bonds | 381 | 14.573 | 000026 | 0.06862 | 0.90086 | 0.07617 | 75 | 100 | 3.8 | 8.0 | 276 | 392 | |
| Pension Bond Funding | 381 | 31.907 | 000027 | 0.03134 | 0.20404 | 0.15360 | 75 | 100 | 1.7 | 3.0 | 127 | 147 | |
| Changes To Housing Excise Tax | 381 | 13.855 | 000028 | 0.07218 | 0.96551 | 0.07475 | 75 | 100 | 4.0 | 8.0 | 290 | 392 | |
| Town of Erie Ballot Question 2A | 338 | 54.130 | 61.626 | 000029 | 0.01847 | 0.21334 | 0.08660 | 75 | 60 | 0.6 | 0.6 | 6 | 3 |
| Town of Erie Ballot Question 2B | 338 | 6.195 | 9.527 | 000030 | 0.16141 | 0.97322 | 0.16585 | 75 | 60 | 5.2 | 28.6 | 48 | 127 |
| City of Longmont Ballot Issue 2A | 406 | 24.258 | 000031 | 0.04122 | 0.26880 | 0.15336 | 75 | 100 | 2.3 | 5.0 | 200 | 232 | |
| City of Longmont Ballot Question 2B | 406 | 14.266 | 000032 | 0.07010 | 0.12186 | 0.57522 | 75 | 100 | 3.9 | 11.0 | 338 | 510 | |
| City of Longmont Ballot Question 2C | 406 | 11.967 | 000033 | 0.08356 | 0.55254 | 0.15123 | 75 | 100 | 4.6 | 13.0 | 402 | 603 | |
| City of Longmont Ballot Question 2D | 406 | 24.385 | 000034 | 0.04101 | 0.57949 | 0.07077 | 75 | 100 | 2.3 | 5.0 | 198 | 232 | |
| City of Louisville Ballot Question 2A | 345 | 67.964 | 000035 | 0.01471 | 0.22002 | 0.06687 | 75 | 100 | 0.8 | 1.0 | 32 | 14 | |
| City of Louisville Ballot Question 2B | 345 | 68.602 | 000036 | 0.01458 | 0.49026 | 0.02973 | 75 | 100 | 0.8 | 1.0 | 32 | 14 | |
| City of Louisville Ballot Question 2C | 345 | 18.422 | 000037 | 0.05428 | 0.40522 | 0.13396 | 75 | 100 | 3.0 | 14.0 | 117 | 191 | |
| Town of Lyons Ballot Issue 2A | 216 | 3.592 | 000038 | 0.27842 | 0.97895 | 0.28441 | 75 | 100 | 14.6 | 52.0 | 56 | 127 | |
| Rocky Mountain Fire Protection District Ballot Issue 5A | 369 | 14.417 | 000039 | 0.06936 | 0.22457 | 0.30887 | 75 | 100 | 3.8 | 8.0 | 51 | 73 | |
| Form of Mill Levy Increase Ballot Issue | 266 | 3.462 | 000040 | 0.28882 | 0.15440 | 1.87056 | 75 | 100 | 15.2 | 78.0 | 97 | 288 | |
| Form of Bond Ballot Issue | 266 | 0.611 | 000041 | 1.63667 | 0.78001 | 2.09826 | 75 | 100 | 70.0 | 200.0 | 393 | 738 |