Posting Key is correct. From the Steemvoter.com FAQ:
Can I give you the Active Key?
NO. NO. NO. Do not give your Active Key. We will not take responsibility if you give your active key and you lose your Steem! Also, active keys will not work.
Posting Key is correct. From the Steemvoter.com FAQ:
Can I give you the Active Key?
NO. NO. NO. Do not give your Active Key. We will not take responsibility if you give your active key and you lose your Steem! Also, active keys will not work.
RE: How to use Steem Voter - Step By Step Instruction