I think you need to put the poll on a new line. So:
Did you get dressed today?
[poll type=multiple results=always min=1 max=4 public=true chartType=bar]
* Yes
* No
* I got changed but not proper clothes
* Who says i was dressed to start with?
[/poll]
(I’ve made it show the code so you can see what your reply should look like. But don’t forget we have a Preview button on the bottom right. )