No. The idea (imho) is that by giving you a limited number of votes, it forces you to use your votes only for the top few features you really want to see.Doesn't limiting votes false the results ?
If everyone had unlimited votes, then everyone would simply vote for everything and there would be no simple way to know what the voters wanted as highest priority.
With limited votes, you can vote for the new features you want most.
Then when you get more votes, you can vote for more features.
I think you get more votes when one of the features you voted for is implemented. (ie: Your vote is "released", since that feature was implemented.)
I think you can also remove a vote for something you previously voted for. Then you can use that vote elsewhere...