I did one yesterday that had ten. How high can it go? I assume it's not unlimited?

I have created polls with dozens of options.

There's no limit on the number of poll choices.

Maximum Poll Options
Maximum number of options a user can select for the poll.
Set this option to 0 to allow any number of options.
0

Poll Option Length
Maximum length that a poll option can be.
100

Just attempted to make a poll with five thousand choices and it would have been possible.

So my upcoming planned poll of choose your favorite number between 1 and trillion is still a go.

Just attempted to make a poll with five thousand choices and it would have been possible.

So my upcoming planned poll of choose your favorite number between 1 and trillion is still a go.

Sounds fascinating. What year are you planning to complete inputting it?

The longest one I've seen is this one, with over 700 choices:
https://www.sitcomsonline.com/boards/showthread.php?t=136997

This is the only site I have seen that has no limit on # of poll choices (Ah man!!)