A great resource from Pollster that we’ve seen a lot in class. You can adjust it, and play with the settings. Pretty cool!
The red and blue lines stand for the ‘trend’ over time of the polls for John McCain or Barack Obama. The small dots reflect individual polls conducted by various organizations through various methods. Pollster puts all the data from the individual polls to create a ‘trend’ for each candidate.
Because each poll can have smaller errors, biases, or fundamental flaws, I find that looking at the trends is a much more efficient way to study which way the race is headed towards.