President Obama's endorsement of gay marriage undoubtedly reflects a personal evolution in his thinking, as he's said.
But his decision also reflects a hard-headed acknowledgement of the changing nature of the Democratic electoral coalition. Indeed, historians may someday view Obama's announcement Wednesday as a milestone in the evolution of his party's political strategy, because it shows the president and his campaign team are increasingly comfortable responding to the actual coalition that elects Democrats today-not the one that many in the party remember from their youth.
(RELATED: In Reversal, Obama Backs Gay Marriage)
Obama's senior advisers see the announcement as essentially a political wash, although polls now consistently show more Americans support than oppose gay marriage. In its latest national measure, the Pew Research Center found in April that a 47 percent to 43 percent plurality of Americans back same-sex marriage. Other recent national surveys, including those by Gallup and the NBC/Wall Street Journal poll, have found majority or plurality support for the idea.