Adding Poll to Blog Content Type
You need to install Entity reference module

Then in your blogs content type, add a new field


Name: [what ever you like] I named mine aaaa
Type: entity reference 
Widget: auto complete.
Then on the settings page for Target Bundle select poll.


Then edit your block, and in entity reference field (aaaa), type your poll name and save changes.



In Views, create a block view of poll. 

Under Advanced, RELATIONSHIPS add Entity Reference: Referecing entity NOT referenced. 



Checkmark require this relationship.



Then add a CONTEXTUAL FILTER of Content: Nid

For Relationship, select your referecing

Provide default value, Content ID from URL.



Note: your view preview will be blank, but it will show up when you view the blog.

Lastly, in blocks, assign your view block to a region. 

Now this will automatically show the poll that you reference in your blog.