The states that are dropping out of ERIC are accused of intent to suppress the vote

https://www.governing.com/politics/what-the-far-right-fuss-over-voter-rolls-is-really-about

In this op-ed a long-time journalist charges that Republicans are leaving ERIC (a national multi-state facility that is intended to help states maintain accurate voter lists) because it encourages states to register those who are eligible but unregistered. The author alleges that Republicans want to purge certain voters.

Charlie Cooper