The media is one of the least trusted institutions in the country. Many people think that the media openly lies to promote their own agenda. If you are one of those people that does not trust the MSM, would you feel compelled to honestly tell them your preferred presidential candidate? Are you going to be truthful with the WashingtonPost-ABC news poll, CNN/Opinion Research, Reuters/C-SPAN/Zogby, or Fox News/Opinion Dynamics? What about Gallup or Rasmussen? Since the two linked articles above are based on polls, what good are they anyway?
I think this is one of the reasons that there's so little confidence in the horserace polls this year.
Update: In light of Obama's historic victory, it must have been hope that buoyed my doubts about polling. The polls proved to be more or less spot on. I'm sure Pollster.com has more to say about that.
Congratulations to President elect Obama!