Partisanship in America, discussion help

Choose ONE of the following questions to answer in the Discussion Board:

1. Analyze Figure 10.1, "Partisanship in America." What factors do you believe had led to increase in the number of people who identify as "Independent," as opposed to Democrat or Republican?
2. The publication of poll results in the days before an election is often criticized because some say that voters are influenced to vote for the "leader" in the poll—the so-called 'bandwagon effect'. Do you think that there is any merit to this criticism?
3. "Revolving door" laws prohibit public officials from lobbying activities for one year after they leave office. What do you view as some potential political pros or cons of public officials making this transition?