Hi Riana,
'Polls' help, when there are many different polls, I can see how they are trending.
Nate Silver has solid history & RealClearPolitics show all the different polls & give an average.
You might find them helpful?
By the way, who do you think is ahead (to win) at this time?
http://fivethirtyeight.blogs.nytimes.com/
http://www.realclearpolitics.com/?state=nwa