As legal challenges to voter identification laws slowly wind their way through the courts, opponents of the controversial measures aren’t just sitting around waiting for judicial relief. They’re hitting the streets in a grassroots effort to make sure affected voters have the documents they’ll need to cast their ballots in November. “When you put Americans’ backs against the wall, we tend to rise and we tend to fight a little harder,” said John Jordan, an NAACP elections consultant in Philadelphia, where a new state law requires voters to have government-issued photo identification documents.