Tod Lindberg, Hoover Institution fellow and Policy Review editor (and informal foreign policy adviser to the McCain campaign), weighs in on the swirling socialcon controversy: The Center-Right Nation Exits Stage Left.

Here’s the stark reality: It is now harder for the Republican presidential candidate to get to 50.1 percent than for the Democrat. My Hoover Institution colleague David Brady and Douglas Rivers of the research firm YouGovPolimetrix have been analyzing data from online interviews with 12,000 people in both 2004 and 2008. It shows an overall shift to the Democrats of six percentage points. As they write in the forthcoming edition of Policy Review, “The decline of Republican strength occurs by having strong Republicans become weak Republicans, weak Republicans becoming independents, and independents leaning more Democratic or even becoming Democrats.” This is a portrait of an electorate moving from center-right to center-left.

Some analysts like to explain this shift by pointing to Democratic gains and Republican losses among particular regions and demographic groups, arguing that the GOP has growing problems winning over such areas as the Southwest and such groups as Latinos, educated professionals, Catholics and single women. There’s something to this, but the Republican problem is actually larger and more categorical. In 2004, Republicans and Democrats each constituted 37 percent of the electorate. In the 2006 congressional election, Democrats outnumbered Republicans 38 percent to 36 and won big. This year, the Democrats made up a stunning 39 percent of the electorate, compared with just 32 percent for the Republicans. Add the painful fact that Obama outpolled McCain among independents, 52 percent to 48, and you have a picture of a Republican Party that has lost its connection to the center of the electorate.

Shortly after the GOP convention, McCain looked as if he could still come back. But it was the “maverick” McCain, running against party type, who was winning over independents at that point, not a conservative campaigning as a conservative (compassionate or otherwise).

Perhaps, as Rove says, Obama was running to the center. But can anybody make a serious case that people were mistaking him for a center-right politician?