If you are not seeing poll after publishing or creating a new poll or you are seeing 404 page not found in social media platform after sharing poll. then you must follow this step ->
Go to Admin Panel (Wordpress Dashboard)-> Find menu (Settings) in left hand side -> Click to Permalinks -> Click to Update / Save button
You will see you poll links are working fine. It happens whenever a new custom post made in WordPress it's an common issue. If it doesn't fixed please connect us with below given ways.