No campaign moves in a straight line. Every race experiences turns toward one side or the other, driven by events, the determined efforts of one candidate, or even a bored media hoping for a new story line.
This campaign's most recent turn started Sept. 15 with the credit markets shutting down and the economy at the brink of disaster. Before then, John McCain was 2.1 points ahead in the RealClearPolitics average, his first lead since late March. Two weeks later, RealClearPolitics had Barack Obama ahead by 4.6 points, rising to an 8.2-point lead on Oct. 14.
Is there one more turn in the contest and, if so, will it be toward Mr. McCain?
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