Post-Election Audit of Memory Cards for the August 14, 2012 Connecticut Primary Elections

Posted: October 16th, 2012 | Author: | Filed under: Post Election | Tags: , , , , ,

The Center for Voting Technology Research (VoTeR Center) at the School of Engineering of the University of Connecticut performed post-election audit of the memory cards for the Accu-Vote Optical Scan (AV-OS) tabulators that were used in the August 14, 2012 elections. The cards were programmed by LHS Associates of Salem, New Hampshire, and shipped to Connecticut districts.

Cards were submitted for two reasons per instructions from the SOTS Office (a) the 10% of the districts that are the subject of post-election hand-counted audit are randomly selected by the SOTS Office and asked to send their cards for the post-election technological audit, and (b) any card was to be submitted if it appeared to be unusable. Given that cards in category (a) belong to randomly selected districts and were used in the election, while all cards in category (b) were supposed to be submitted, and that the cards were submitted without consistent categorization of the reason, this report considers all unusable cards to fall into category (b).

The Center received 86 memory cards from 66 districts. Among these cards, 44 (51.2%) fall into category (a). All of these 44 cards were correct. Out of these cards, 16 cards show elections, with 15 cards that were actually used on Election Day (one card shows an election on a different date). There are 42 cards (48.8% of all cards) that were found to be unusable by the AV-OS, thus falling into category (b). All of these cards contained apparently random (or ‘junk’) data. These cards were unreadable by the tabulators and could not have been used in an election. Given that such cards were not selected randomly, we estimate that the percentage of unusable cards is between 1.4% and 15.9% in this audit, and this is consistent with prior audit results.
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Pre-Election Audit of Memory Cards for the August 14, 2012 Connecticut Primary Elections

Posted: October 16th, 2012 | Author: | Filed under: Pre Election | Tags: , , , , ,

The Center for Voting Technology Research (VoTeR Center) at the School of Engineering of the University of Connecticut performed pre-election audit of the memory cards for the Accu-Vote Optical Scan (AV-OS) tabulators that were used in the August 14, 2012 elections. The cards were programmed by LHS Associates of Salem, New Hampshire, and shipped to Connecticut districts.

Cards were submitted for two reasons per instructions from the SOTS Office (a) one of the four cards per district was to be selected randomly and submitted directly for the purpose of the audit, and (b) any card was to be submitted if it appeared to be unusable. Given that cards in category (a) were to be randomly selected, while all cards in category (b) were supposed to be submitted, and that the cards were submitted without consistent categorization of the reason, this report considers all unusable cards to fall into category (b).

The VoTeR Center received 82 memory cards from 67 districts. Among these 82 cards, 36 (43.9%) fall into category (a). All of these 36 cards were correct. There are 46 cards (56.1% of all cards) that were found to be unusable by the AV-OS, thus falling into category (b). In particular, 44 cards contained apparently random (or ‘junk’) data, one card was unusable by AV-OS, but did not contain random data (this requires further investigation), and one card was formatted using AV-OS tabulator, however, it was not programmed. All these cards were unreadable by the tabulators and could not have been used in an election. Given that such cards were not selected randomly, we estimate that for pre-election audit the percentage of unusable cards is between 1.5% and 17.2% and this range is consistent with the results for prior audits.
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