I have no doubt that the Obama campaign knows what it needs to do to combat various suppression and fraud tactics, and almost certainly has been preparing for this for as long as they've been preparing for this election. We can help.
Contact the Dem party in Ohio, Florida, or any of the battleground states to see what you can do to get out the vote in those states. You can do this even if you don't live in one of those states. Overwhelming with sheer numbers is the best thing we can do to fight back.
On top of that, make it known through official channels that this isn't acceptable. There are millions of us who are ready to throw down over this bullshit. Let's pick up the phone and do it.
ACLU of Ohio: (216) 472-2200, contact@acluohio.org
Ohio Attorney General: (614) 466-4320
U.S. Dept of Justice, Civil Rights Division: (202) 514-4609