About IDs, contact Citizen Action and they can give you information on the woman who runs that project in Milwaukee and perhaps projects elsewhere, since they are a statewide organization. http://www.citizenactionwi.org/contact
The League of Women Voters is active with registration. And in Milwaukee there is a group called Supermarket Legends that has done a lot of registration (over 500 registered at UWM recently, for example). https://www.facebook.com/supermarketlegends
Unfortunately, the legislature is on track to pass a law taking away the function of SRDs (special registration deputies) because of starting online voter registration through the DMV (which will cover only people who have a driver's license or state ID). This is a naked move to end voter registration in the community for the people who need it most. It wouldn't take effect until at least July, and there are ways around it, but frankly it stinks. However, we can't give up, can we?