More than 350,000 informational data points on Wisconsin's state voter roll are alleged to be inaccurate, according to a citizen activist.

Justin Gavery is one of about 500 volunteers who banded together nearly two years ago to work to improve voter confidence in Wisconsin elections.

Cleaning up sloppy voter registration information is one of the group's stated priorities.

Computer experts from the group produced a presentation on all of the state's 72 counties. For illustration, they focused on information from Dane and Milwaukee counties as representative of what is going on across the state.