Mobile API: Where/How can we see if the logged-in user has already voted in a Poll?

[PleaseHelp]

Hello,

We have scoured the entire Mobile API and we cannot find a single method that tells you whether the user (who is currently logged-in) has already voted in the poll they are viewing or not. Not the poll methods, not the showthread methods, nothing. So we're feeling a little dumb right now... :erm:

This is critical information because what we need to display to the user depends on whether they have already voted in the poll or not. If they have not voted, then we need to display a form with the questions for them to vote on. But if they have already voted, then we need to display the results of the poll.

So we are completely stuck without that critical piece of information and we don't know where/how to find it.

Can anyone please help and let us know where/how we can see if the logged-in user voted in a Poll they are viewing via the Mobile API?

Thanks!