Originally Posted by Beingist
Republicans don't like to participate in online polls?
Many people who are politically (and especially socially) conservative believe that no one but the ballot box needs to know who they're going to vote for. They don't answer polls (phone or internet), don't post about politics on the internet etc. This is a well known phenomenon among pollsters - it's why for national polling you have to use a likely voter model to re-sample your results, or they will continually under-represent the social conservative vote.
Internet polls also totally fail to exclude people who can't vote in a given election. So in this case you've got lots of people not registered to vote in the Republican primary in their state expressing an opinion. That's all well and good, but it has nothing to do with who will win the nomination.