Churches would lose their tax exempt status.
As long as registration drives are non-partisan, they are legal in churches (in most — maybe all — states).
“The IRS says church voter-registration
drives are legal, and even encouraged, as
long as they’re nonpartisan and don’t endorse
or oppose candidates.”
We registered voters at our church in CA back in the ‘90s. Also, our pastor handed out lawn signs, which definitely is a no-no. He did say that if he were to be arrested for it, he’s OK with that.