Many items are picked up in HTML: YouTube embed coding, infobox coding. Here is a cheatsheet:

1. Put your cursor where you want the infobox or video or other item (before the first letter of the first word of a paragraph is best).

2. Click on the farthest-right box on the toolbar’s second row (looks like a suitcase with <> in front).

3. When the box appears, paste in the HTML coding.

4. Hit the Insert button.

ADDENDUM: This also works with PollDaddy coding — though it won’t show in the WYSIWYG format. You’ll need to go to Preview to see it.