From Abyssinia’s “Parsing the Polls” article:
*Gallup uncovered one very significant shift in this year’s voting electorate. There has been a remarkable movement toward the Republican party. As Gallup reports:
The largest changes in the composition of the electorate compared with the last presidential election concern the partisan affiliation of voters. Currently, 46% of likely voters identify as Democrats or lean Democratic, compared with 54% in 2008.
But in 2008, Democrats enjoyed a wide 12-point advantage in party affiliation among national adults, the largest Gallup had seen in at least two decades. More recently, Americans have been about as likely to identify as or lean Republican as to identify as or lean Democratic.* Consequently, the electorate has also become less Democratic and more Republican in its political orientation than in 2008. In fact, the party composition of the electorate this year looks more similar to the electorate in 2004 than 2008.
…
To be sure, the most recent spate of national polls include more Republicans than did the surveys conducted earlier in October. Nevertheless, they still give more advantage to the Democrats than Gallup’s aggregate data suggest should be the case. ABC/Wall Street Journal’s most recent poll, for example, includes 34 percent Democrats and 30 percent Republicans, the Investors Business Daily poll sets the Democrats’ advantage at seven points (38 percent to 31 percent), and an Associated Press survey comes in two percentage points more Democratic than Republican.
Correcting these polls so that there was a Republican edge in the sample of voters consistent with Gallup’s finding would hand Romney a lead between five to ten points. Imagine the run on smelling salts at Mother Jones and MSNBC if that were to happen?
This is encouraging.