...If you look at all the exit polls, even among minorities - African Americans, Hispanics, Asians, etc. - Obama always did best among young voters 18-29 years of age. He also won the young white vote in a couple of states that he lost (Missouri and Montana - I believe a map was posted on the forum under a different thread) but ironically he lost the young white vote in states that he carried including Virginia, Florida, and New Mexico, but disregarding race, Obama won the national youth vote by a two-to-one margin over John McCain. That cannot be good news for the Republican Party, and I do agree that their coalition is shrinking and Democrats' is expanding.
The GOP must win back a significant part of the vote of people born between 1979 and 1994, or else it will have a long time in the minority, often in places that it has considered safe for decades (like Indiana and Virginia). Those age cohorts may revert some toward the norm when they are in their forties and fifties, but that will not be fast enough to return the Republican Party from a party of aging white people. Such people will largely revile George W. Bush as long as they are alive in large numbers as voters, which means until at least the 2060s. The oldest among them are surely teaching school and shaping attitudes of teenagers who take learning seriously, and it won't be long before many start entering politics -- largely, I figure, as Democrats.
Sure, they will be more responsive to ideology than to partisan identity, so special interests within the GOP will still be burned should the GOP become the party that includes those who think that Obama doesn't or didn't go fast enough.
It's not simply "God"; it's a description of God that few educated people can accept. The age group in question believes that science has more means of solving some of the great problems in life (let us say, prediction of earthquakes and mitigation of their damage) than does appeasement of a "God angry at sinners". If the Big One strikes San Francisco, then the cause will be in stresses along a fault line than the presence of so many gays. I find Mendelian genetics, Darwinian evolution, Freud's theories of the subconscious, Einstein's relativity, and Wegener's theory of continental drift far more useful than any guilt trips.
As for sex education (a supposedly "un-Godly" practice), what is the alternative? "Doin' what comes natcher'ly"? Or relying upon pornography? We can make sex education both rational and moral it must be both, and that relies upon setting a firm foundation in science.
Guns? We Democrats need to make clear that we are against the sorts of firearms that no hunters would ever want -- and that we are more reliable protectors of the environment in which sport hunters hunt. People who stick up convenience stores and restaurants aren't sport hunters. The four most common circumstances that result in murder are family arguments, bar-room brawls, armed robberies, and drug dealing. Because armed robberies are rarer than the other three, they must be unusually deadly. Let's make armed robbeery more difficult.
Gays? I have no problem with homosexuality so long as we both keep our pants up and zipped in each others' presence.
My hypothesis is that if the Republican Party continues to be driven by conservative right-wing talk radio hosts like Rush Limbaugh, Michael Savage, Ann Coulter, etc. who alienate, demonize, bash and label everyone who disagrees with them as "socialists," "liberals," "idiots," "Godless," etc., that leaves no room for moderation, and my generation will become a faithful voting bloc of the Democrats nearly or in as much as African Americans have. Furthermore, if the Religious Right of the party is not silenced or at least compromises on their values, it is going to turn off youth even more. Calling people "sinners," "perverts," "deviants," "immoral," and telling them "You're going to Hell!" if they support a woman's right to choose or marriage equality isn't exactly a good way to get votes, especially young voters who are already skeptical about organized religion and its inevitably waning influence in politics.
Young adults are definitely not hippies, and if they are more atheist than their parents, maybe it is because they saw too much of the religious clowns on TV. If they are religious they want their religion to respect reason and intellect.