Voting in Ohio starts in five minutes.
As a result of a middle of the night ruling (typical), you may be challenged in Ohio today.
According to Ohio Law (§ 3505.18):
YOU HAVE THE RIGHT TO VOTE without presenting any identification after the election officials have verified your signature. If you are unable to sign the register, you may still vote after you present proper identification to verify your identity.
As a non-lawyer reading that, I take that to mean that only those with a permanent handicap (or a temporary one, like a cast on your writing hand) that prevents them from physically signing the registry need to show ID.
Look, Ohio's Republican Secretary of State, Ken Blackwell, has already predicted a 73 percent turnout in Ohio this year, up from 63 percent four years ago. So you know they need to challenge, because this kind of rise in voter turnout does not bode well for the GOP in the Buckeye State.
Here is the national voter fraud hotline webpage, with a toll-free number as well as a link at the bottom (in English and Spanish) with more information on your voting rights in Ohio than what I've posted above. Sadly, the OH secretary of state's Board of Elections' webpage does not provide much information on how to file a complaint, other than to instruct you to notify the poll worker at your voting location.
Related note: If you are planning to vote after work today, or late in the day, they MUST let you vote so long as you ARE IN LINE by 7:30 p.m. when the polls close. Do NOT let them turn you away if you are there but still in line, whether inside or outside the polling location. Pass the word.
UPDATE: More information on Ohio from DKos’ incomparable readers. Go here and here.