With the flurry of polls we report each day, it's good to keep in mind what The Economist says of the race for the White House:
"Most presidential campaigns are three-act dramas. Act I is a referendum on the incumbent. Voters look at the president and ask “Does he deserve four more years?” If the answer is a clear yes—as in 1984 or 1996—it barely matters who the challenger is; he may as well go home. This stage lasts until the party conventions. Assuming voters have not definitively decided on re-election -- and, manifestly, they have not this time -- Act II starts with the conventions and runs until about September. Voters then turn their attention to the challenger: is he ready for prime time? If he is, Act III, the real horse race, begins in September with the presidential debates. Then, and only then, do the head-to-head comparisons matter."