What it means by 'left votes?'

i found this (sorry, that i cant’ capture the alter for vote button),
when i hover on the vote button, I found that it says ‘You have N votes left.’
I think this means that from now I can only vote for the article N times.’
is it so? and how to do when votes number becomes 0?
I know that maybe we will not vote for over 5,000 times( which is default? initial number for votes) but I’m asking just for curious.
thank you

Hello! I think certain trust level users have different amount of votes they can give daily. That means a certain number of votes you can give to any article. However, you can only vote on an article/post once.