Contest voting with different IP addresses

Hello, i need help with voting (multiple votes) with unique IPs for an online contest. The freelancer will need to have experience doing this: to vote, no log in required, but need unique IP addresses from the US only. No foreign IPs, only USA. The freelancer will just need to select one option, and click on vote The votes will need to be done throughout the day and not all at once. I will need at least 700 votes, but if you ca provide more, let me know and i will provide bonus $$. Urgent.