Idaho
Idaho first participated in Crosscheck in 2014. Idaho's roll-out of Crosscheck was notable in that incorrect instructions regarding how to handle Crosscheck matches, leading to the erroneous purge of over 750 legitimate voters in Ada County.
Idaho's response to Indivisible Chicago's open records requests provided all of their file encryption passwords and FTP server credentials, along with the secret IP address of the central Arkansas FTP server which holds 100 million voter records each year, leading to this story in Gizmodo.
We obtained and mapped Idaho's 2017 Crosscheck results. Each pin between in this map and this map (we exceeded the Google limit) represents an Idahoan who was identified as potentially matching a registered voter in another state. To understand the poor quality of this data, the Idaho Statesman obtained some Crosscheck statistics for Ada County, charted below.

Data Quality Analysis of Ada County, Idaho's 2016 Crosscheck Results
Vital Statistics
- Joined: 2014
- Not in ERIC
- Voter Records sent in 2017: 797,534
- In-State Voter Records in Result file: 28,113
Who to Contact
Secretary of State Lawerence Denney has the power to unilaterally decide to withdraw from the voluntary Crosscheck program.
State Senate Minority Leader Michelle Stennett and House Minority Leader Mat Erpelding have both stated they are exploring legislation to force the state to leave the program.
Call Secretary Denney to urge him to leave the insecure, flawed Crosscheck program. Your data privacy is at risk. Then call or write your state legislators with the same request and to ask them to work with Senator Stennett and Representative Erpelding to withdraw from Crosscheck.
Remind them that if they truly take voter roll maintenance seriously, they should instead join the ERIC program.
Secretary of State Lawerence Denney
(208) 334-2852
elections@sos.idaho.gov
Call or write your legislators
Find your legislator
Idaho Crosscheck News
The Idaho Statesman's Cynthia Sewell has provided phenomenal coverage of this issue.
Secretary Denney Still Uncertain About Continuing Crosscheck Participation, January 4, 2018
Voter Crosscheck Program Under Review After News of Security Holes, November 22, 2017
Idaho Should Pull Out of Voter Crosscheck Program, November 21, 2017
Voter Crosscheck Concerns Merit Scrutiny, November 15, 2017
Idaho Shared Voters’ Private Info with Kobach’s Crosscheck System, Despite Vulnerabilities, November 13, 2017
Idaho Democrats Call to Pull State from Interstate Voter Registration Crosscheck Program, November 13, 2017
In Idaho, Program to Fight Voter Fraud May Cause More Problems Than It Catches, November 12, 2017
Idaho is Sharing Your Private Voter Data (Even Though It Promised Not To), November 9, 2017