@Jannn, thanks.
can confirm now that it is working with new nano v1.0.0 to vote and unvote in one step spending 1 LSK
and here:
https://lisk.builders you can find delegates actively contributing to lisk either by code or by doing activities that directly benefit the platform in a BIG way.
By voting the
freelancer ones, you participate in the Lisk 1st lottery.