To quote the badge page:

> Voted on 600 questions and 25% or more of total votes are on questions


It is a little confusing, but it actually means that you must vote 600 **questions**, not that you should have 600 votes combined between questions and answers. From what I  see in your profile, out of the 622 votes only about 300 are on questions. So I belive that you don't qualify yet.


Based on meta you seem to have fall in a common wording trap:

[Wording change on Electorate badge](http://meta.stackexchange.com/questions/70312/wording-change-on-electorate-badge)

[Possible problem with Electorate badge](http://meta.stackexchange.com/questions/62061/possible-problem-with-electorate-badge)

http://meta.stackexchange.com/questions/92519/where-is-my-electorate-badge


Also see the electorate badge description on http://meta.stackexchange.com/questions/67397/list-of-all-badges-with-full-descriptions/67399#67399