He makes some very useful points today. First, was the electorate that different in terms of demographics from 2006? Not that different:
According to the 2006 exit poll, those who voted were 38 percent Democratic, 36 percent Republican, and 28 percent Independent. This year the split was very similar—36/36/28—which accounts for only a small portion of the popular vote shift…
What about age? The conventional wisdom before November 2 was that seniors enraged or terrified by changes in Medicare would turn out in droves to punish those who voted for health reform while young people disillusioned by Obama’s failure to create the New Jerusalem would abstain. That did happen, but only to a modest degree. Voters of ages 18-29 constituted 12 percent of the electorate in 2006; 11 percent in 2010. Voters over 65 were 19 percent of the total in 2006; 23 percent in 2010—noticeable but hardly decisive….
We get more significant results when we examine the choices Independents made. Although their share of the electorate was virtually unchanged from 2006, their behavior was very different. In 2006, Democrats received 57 percent of the Independent vote, versus only 39 percent for Republicans. In 2010 this margin was reversed: 55 percent Republican, 39 percent Democratic….
Second, was it different in terms of ideology? Absolutely, reflecting the trends Ramesh and I noted in our piece last week:
In 2006, those who voted were 32 percent conservative, 47 percent moderate, and 20 percent liberal. In 2010, by contrast, conservatives had risen to 41 percent of the total and moderates declined to 39 percent, while liberals remained constant at 20 percent….
To complete the argument, there’s one more step: Did independents shift toward Republicans because they had become significantly more conservative between 2006 and 2010? Fortunately we don’t have to speculate about this. According to the Pew Research Center, conservatives as a share of total Independents rose from 29 percent in 2006 to 36 percent in 2010. Gallup finds exactly the same thing: The conservative share rose from 28 percent to 36 percent while moderates declined from 46 percent to 41 percent.
This shift is part of a broader trend: Over the past two decades, moderates have trended down as share of the total electorate while conservatives have gone up….