Yes. Margin of error is a number calculated to predict the range of probable outcomes of answers given in a survey or data derived from a scientific experiment. In a survey, it usually only includes sampling error, and reliability of the number assumes that non-sampling errors are negligent.
Here's an excellent summary of margin of error for the layman:
http://www.surveyusa.com/ASA.pdf#search=%22calculate%20%22margin%20of%20error%22%20scientific%22
Another f#@king poll! Nobody asked me or anyone I know. I really doubt these polls are worth a fiddlers f#@k.