Here's one example that shows 35% of the people purged from the registration list, were legally registered to vote.Link, please.
1) An internal analysis conducted by the Tennessee Democratic Party and the Democratic National Committee's voter protection team has found that more than 11,000 voters statewide, who are still active on the voter file, have had parts of their voting history disappear.
2) In new investigative research by BLACK BOX VOTING, examining what actually happens to voters wrongfully classified as "inactive", it was found that 35 percent of these were actually purged (cancelled from the voter rolls).
In my state if you don't vote in the primary or general election, you are purged and have to re-register. That is the way it should be as it gives the election officials a fighting chance to have folks in the correct precinct and allows for better record keeping.