Emissary Green

• WWizards of the Coast2024-02-02
  Official Ruling
  Abilities that trigger "whenever players finish voting" trigger once all players have voted or once all secret votes are revealed, but they won't go on the stack until the current spell or ability finishes resolving.
• WWizards of the Coast2024-02-02
  Official Ruling
  In the case of non-secret voting, votes are cast in turn order, and each player will know the votes of players who voted beforehand.
• WWizards of the Coast2024-02-02
  Official Ruling
  Each player must vote for one of the available options. They can't abstain.
• WWizards of the Coast2024-02-02
  Official Ruling
  No player votes until the spell or ability resolves. Any responses to that spell or ability must be made without knowing the outcome of the vote.

Rulings via Scryfall