That's where almost all the mass murderers come from as well as 90% of the nation's criminals.
We could start with those lists and begin some 'house to house' that'd go right to the very nexus of the murder, crime, graft and mopery complex in this nation, and once that was over we could once again open up the 4th and 5th amendments to full enforcement!
Not so much registered Democrats. There are, I suspect, a good number of those folks who still buy into the tripe being spouted by the Dems which hasn't been true since the days of JFK, Patrick Moynihan, and Zell Miller. They're not the problem.
It's the "connected" people: Soros, Buffet, Corzine, Holder, Neopolitano, and some as yet to be named players (including some crony capitalists) behind the scenes that are the real problem. They're careful not to have too many fingerprints on their handiwork, but if you're going to go after someone, that's the list you want to get.
The true believers like Lisa Jackson are folks that would fall into Lenin's "useful idiots" category. They merely need to be kept away from any lever of power--think keeping the keys to the car from drunk teenagers at a party.
Problem is, if you're using voter rolls, you'd spend way too much time at vacant lots and graveyards to get anything done.