Which page type next?
The tally moves as people vote — no refresh, because the page is the document.
3 people have voted·pick as many as you like
Which page type next?
This is a real poll: pick one — or several, since this one allows it — and the bars move for everybody reading the page at the same time.
You have no write access to this document. The vote goes through RPC v1, the server checks who you are and writes on your behalf, and the ballot is stored under the identity IT stamped rather than one your browser claimed. That is why a second tab is not a second vote.