ConnectApi.PollCapabilityInput

Create, update, or vote on a poll on a feed element.

Property	Type	Description	Required or Optional	Available Version
`choices`	List<String>	The choices used to create a new poll. You must specify 2–10 poll choices for each poll.	Required for creating a poll	32.0
`myChoiceId`	String	ID of an existing choice on the feed poll. Used to vote on an existing poll.	Required for voting on a poll	32.0

Apex Reference Guide