Baby Gap: How birthrates color the electoral map

Some interesting commentary from Steve Sailer, who seems to have a nack for writing about subjects which tend to be controversial or thought and not spoken.

Funny (emphasis mine):
That the president launched a war under false pretenses no doubt caused a few highly-informed constituencies, such as the Joint Chiefs of Staff, the CIA, and the subscribers to this magazine, to shift many of their votes, but almost every group large enough to be measurable by exit polling was relatively stable. If they supported Bush’s foreign policy in 2000, they supported his contrary stance in 2004 and vice versa.

But more to the point of the article:
The single most useful and understandable birthrate measure is the “total fertility rate.” This estimates, based on recent births, how many children the average woman currently in her childbearing years will have. The National Center for Health Statistics reported that in 2002 the average white woman was giving birth at a pace consistent with having 1.83 babies during her lifetime, or 13 percent below the replacement rate of 2.1 children per woman. This below-replacement level has not changed dramatically in three decades.

States, however, differ significantly in white fertility. The most fecund whites are in heavily Mormon Utah, which, not coincidentally, was the only state where Bush received over 70 percent. White women average 2.45 babies in Utah compared to merely 1.11 babies in Washington, D.C., where Bush earned but 9 percent. The three New England states where Bush won less than 40 percent—Massachusetts, Vermont, and Rhode Island—are three of the four states with the lowest white birthrates, with little Rhode Island dipping below 1.5 babies per woman.

Bush carried the 19 states with the highest white fertility (just as he did in 2000), and 25 out of the top 26, with highly unionized Michigan being the one blue exception to the rule. (The least prolific red states are West Virginia, North Dakota, and Florida.)

In sharp contrast, Kerry won the 16 states at the bottom of the list, with the Democrats’ anchor states of California (1.65) and New York (1.72) having quite infertile whites.

Among the 50 states plus Washington, D.C., white total fertility correlates at a remarkably strong 0.86 level with Bush’s percentage of the 2004 vote. (In 2000, the correlation was 0.85.) In the social sciences, a correlation of 0.2 is considered “low,” 0.4 “medium,” and 0.6 “high.”

You could predict 74 percent of the variation in Bush’s shares just from knowing each state’s white fertility rate. When the average fertility goes up by a tenth of a child, Bush’s share normally goes up by 4.5 points.