In the wake of the Secretary of State’s concerns about getting enough photo identifications to voters in time for November’s elections, state revenue officials are offering an explanation of how they plan to get the job done. The state Department of Revenue estimates that about 170,000 voting-age Missourians don’t have the photo identifications they’ll need to vote in November’s election. The agency’s Lowell Pearson says not all of them will need them. But Pearson doesn’t know exactly how many still might need one and won’t even offer a guess. And he doesn’t know how many the 25 mobile photo ID labs going to nursing homes, senior centers, assisted living centers, and sheltered workshops will be able to do each day because no one has done this before. Pearson does says despite sending the mobile labs out, the best idea still is to go into a regular fee office if you need a photo ID.