Voter Suppression in Wisconsin
motherjones.com
motherjones.com
For the impoverished a driver's license and passport are extraneous to every day life, a military ID is unlikely, and if you read further, state IDs were not easily obtainable in a reasonable amount of time.
1. They have to be free 2. They have to be "accessible" for the rural population 3. They have to be adequately communicated in advance of elections (1+ years, not 1+ months) 4. The process needs to be simple - require proof of citizenship or an ID that requires proof of citizenship.
I think there'd be no problem with having a few people stationed in post offices to do this. I'd imagine a fair amount of supporters would volunteer to do it if it meant improving the integrity of our elections.