President Barack Obama almost ran the table Tuesday night when it came to battleground states.
The lone exception: North Carolina.
Of a dozen competitive states, it was the only one that went from Democratic blue in 2008 to Republican red this year.
Why didnt Obama carry the Tar Heel State?
Here are five reasons:
1. The sour economy
During the 2008 campaign, at the outset of the recession, then-Sen. Obama blamed the economic collapse on Republicans. That argument helped make him the first Democratic presidential candidate to carry North Carolina since Jimmy Carter in 1976.
But even under those optimal political conditions, Obama won this traditionally Republican state by less than one percentage point. It was his narrowest victory in 2008.
So President Obama had little N.C. cushion going into the 2012 campaign. And this time, Republicans were blaming him for the states 9.6 percent unemployment rate, the fifth highest in the country.
At least two other battleground states were also suffering economically in this election year. But Obama had carried Florida by nearly 3 percentage points in 2008 (he is slightly ahead there in the latest vote totals), and his margin in Nevada was more than 12 percentage points four years ago.
Obama only won it here by 14,000 votes last time and we knew this election would be closer, said Andrew Taylor, a political scientist at N.C. State University. So, with the (bad) economy and the slight movement toward the GOP, everybody knew that North Carolina would be this low-hanging fruit (for the GOP) the first state to go.
Taylor and others are only surprised that Obama didnt lose the state by more than 97,000 votes.
2. GOP honed ground game
In 2008, Obamas North Carolina campaign caught GOP Sen. John McCains campaign napping. By getting so many of their voters mostly African-Americans, young people and women to the polls during early voting, the Obama forces were able to build up a 305,000 vote advantage going into Election Day.
This year, Republicans were wide awake. Romney got 95,000 more early North Carolina votes than McCain did in 2008. Obama, meanwhile, got 39,000 fewer than four years ago.
Going into Tuesday, Obama was leading by 207,000 votes not enough, as it turned out, to overcome Romneys Election Day voting advantage.
Put another way: The Republicans shaved almost 100,000 votes off Obamas 2008 early vote margin, said Catawba College political scientist Michael Bitzer.
For a closer look at the effect of a stepped-up GOP effort, consider Watauga County, a bellwether for North Carolina that went with Obama in 2008 but for Romney on Tuesday.
Watauga is home to Appalachian State University. And one of the differences between 2008 and this year was an increased effort by College Republicans on the campus, said App State political scientist Phillip Ardoin.
The College Republicans were much more effective, much more engaged than in 2008, he said.
Romneys victory margin in Watauga: 753 votes.
3. A slip in urban margins
Four years ago, Obamas big victory margins in several of North Carolinas urban counties were enough to overcome lopsided defeats in many smaller, rural counties.
This year, those margins shrunk in a few key counties.
Obama won Wake County by 64,000 votes four years ago. On Tuesday, he won by 54,000.
There were also slimmer margins in Guilford, Forsyth and Buncombe counties.
Obamas 100,200-vote margin in Mecklenburg was up but only by 100 votes. Only Durham County recorded a big jump Obama won there by almost 5,000 more votes than in 2008.
Said Taylor: From now on, if youre a Democratic presidential candidate in North Carolina, youre going to have to really ramp up the margins in those (urban) counties to offset the losses in rural areas and small towns.
4. Back-burner battleground
The Obama campaign initially had such high hopes of carrying North Carolina again that, last year, the president chose Charlotte as site for the 2012 Democratic National Convention.
But by the time delegates came to town in September, the Obama campaign appeared to be nudging North Carolina onto the back-burner.
The presidents people were still buying TV time on Charlotte and Raleigh stations, and would continue to send in Vice President Joe Biden and first lady Michelle Obama.
But it became increasingly clear that the likely tipping states in the fight over electoral votes were elsewhere Virginia, Florida, Wisconsin, Colorado and, most fiercely, Ohio.
So Obama came to Charlotte to give his acceptance speech, but never set foot in the state after that. Bad weather during convention week doomed the campaigns grand plan to have 65,000 Tar Heels witness Obamas acceptance speech at Bank of America Stadium. The campaign hinted that hed make it up to those disappointed supporters before Election Day by coming back. He never did.
Most national pundits and media outlets pooh-poohed assurances from Obama campaign organizers that North Carolina was still a priority and began shading the state red on their electoral maps.
5. Fewer white votes
Tuesdays voting results held some good news for North Carolina Democrats hoping to keep the state competitive in future election years.
Black voters, who make up 22 percent of the states population, cast 23 percent of the vote and went for Obama 96 percent to 4 percent, according to exit polls.
And Latinos went for Obama 68 percent to 31 percent. Youre talking 2-1 in a group thats getting to be a bigger part of this state, said Bitzer.
But exit polls also said this: White voters, who now represent 70 percent of the states electorate, were even less supportive of the president than in 2008.
That year, 35 percent of white voters in North Carolina cast their ballots for Obama.
In 2012, he got 31 percent.