@Mariannesnut, hard to know how to answer your question. You need to provide some more information for the people trying to help. For instance, what is poll? I'm guessing it is a matrix or a data frame that you got from someone else; and you have two of them from two different polling companies. Are you trying to quickly compare, or do you want to do a detailed analysis?
Also, consider making a reprex of what you've done so far. That way you'll get lots of people offering to help.