Ok guys this is kind of "cheating" but I don't think it really is =P. So this guide will show you how to vote more than once every 12 hours.
First way requires you to have 56k Dial up - not many people use it now a day but if you do great!
1. Dial up and connect to internet and vote
2. delete your cookies. For firefox it's under tools > privacy > show all cookies > delete all
3. Disconnect and repeat.
Second way is similar but works with DSL or cable with DYNAMIC (changing) IP addresses.
1. Go vote
2. delete your cookies. For firefox it's under tools > privacy > show all cookies > delete all
3. Turn off cable box or DSL box
4. Wait 1 minute and turn on again and repeat!
Third way with a STATIC (nonchanging) IP addresses
1. Go vote
2. delete your cookies. For firefox it's under tools > privacy > show all cookies > delete all
3. Go to run and type in cmd
4. type in ipconfig in cmd box
5. next type in ipconfig /release or just "/release" and ipconfig /renew or just "/renew"
6. turn off computer and wait for a lil bit and your IP will reset and you can vote again
7. Rinse and repeat!
Fourth way
1. Go vote
2. delete your cookies. For firefox it's under tools > privacy > show all cookies > delete all
3. go to proxy.org and pick any proxy sites (most will work but some uses another mother to bypass sites but still have same IPs)
4. type in your voting link and press go you SHOULD be able to vote and it will count as a "unique" vote
5. Rinse and repeat