Politics: your rights only exist on 80 stock or higher

Democrats are completing overcoming Republicans in new voter registration drives right now--well-documented in a zillion different articles, I don't feel like finding one. So what is Ohio Secretary of State Ken Blackwell doing to counteract this? He's denying some of the voter applications because the paper stock isn't heavy enough on some of the registration cards. If somebody can give me a reason for this, other than partisan 'I'll do it b/c I can get away with it' bullshit, I'd LOVE to hear it.