It looks like you can vote every five minutes.
Whoa check put the massive push going on for Alizée. She has gained 8,000 votes on the last 45 minutes. Tal is toast in the next ten minutes. She was ahead by 9000 votes 45 minutes ago and Mylene is going to be caught and passed in the next four or five hours at this rate.
Edit:
Someone just bought 10,000 votes for Tal. to stay ahead of Alizée
Let me add a real positive note with out the BOOST $2.99 for 10,000 votes on those ahead of her, Alizée is number one on this poll based on regular fan voting.