Gathering information before voting using LG_polls

I’d appreciate some advice on the best way to do the following: We are running a competition for people who cast a vote for a battle of the bands competition. We therefore need to collect the voters email address and probably country / state they are in before allowing them to vote.

I am using LG_Polls for the voting system and that is working okay but I don’t want people to have to sign up for site membership before they can vote - just fill in a couple of form fields.

I wondered if it is possile to use the ‘Log me in’ plugin in a SAEF to gather the information but I’m not sure how to go about hiding the voting panel until the users enter their information. Can I put the form and voting system all on the same screen and use ajax to hide / show the vote system?

Thanks