Considering Multiple Votes per poll (Patreon)

I'm considering adding a reward that allows for additional votes on a poll. Additional votes per patreon is a little trickier of a thing. I don't really want one person to have a huge sway on the polls but it seems like a cool reward. I would be limiting the reward to one or two additional votes. Essentially a 2x or 3x vote multiplier for that person. 

I would be interested to know if anyone thinks this is a good idea or a bad idea.