Decision 2012: After Party Conventions, Who's Ahead in 2012 Presidential Race?

In spite of a tough jobs report, President Barack Obama appears to have lead over Republican challenger Mitt Romney in the wake of the party conventions.

Class discussion: Why is it difficult to defeat an incumbent in an election? What advantages do incumbents have? In the past 50 years, how many presidents failed to win reelection bids? What circumstances led to their defeats?