Last year, 23-year-old Rashida Hill watched the presidential debates, visited the college political party meetings and put a Barack Obama bumper sticker on her townhouse door. She voted for Obama because she felt like the election was about "being a part of something."

But on Tuesday, the Virginia Commonwealth University student didn't bother voting in the governor's race because, she said, the candidates didn't give her anything to get excited about.

"The simple fact is, unless you put it in front of somebody, they're really not going to seek it out," Hill said.

Many of the young, first-time voters who propelled Obama to the presidency stayed home this year, a glaring absence that helped Republicans win governor's races in Virginia and New Jersey. More than 3 million voters who cast ballots in the 2008 presidential election - many of them minorities - failed to show up at the polls in either state.

Obama carried Virginia with 52 percent of the vote last year, but only 43 percent of voters surveyed in Associated Press exit polls Tuesday said they had voted for him.

Independents change sides
Another group that solidified Obama's victory - independents - turned their backs on Democrats this year.

In Virginia, independents in 2008 helped make Obama the first Democratic presidential candidate to carry the state since 1964. But on Tuesday, they voted 2-1 in favor of Republican Bob McDonnell, who easily defeated Democrat Creigh Deeds. About one in 10 Virginia voters switched their support from Obama in last year's election to the Republican candidate for governor this year.