As to voters who voted for Obama the first time why would they vote for Obama a second time?

U. S. Bureau of Labor Statistics:
-The unemployment rate during GB’s 8 years ranged from 4.3 to 6.3?((http://data.bls.gov/timeseries/LNS14000000)
-The unemployment rate has been over 8.1?or three and a half years.

1/25/11 npr.org: During his [Bush’s] presidency, the national debt rose by an average of $607 billion a year. How does that compare to Obama? During Obama's presidency to date, the national debt has risen by an average of $1.723 trillion a year — or by a jaw-dropping $1.116 trillion more, per year, than it rose even under Bush.

-7/8/11 U. S. News Report (usnews.com): The actual number of private sector jobs decreased since 2008. Government jobs increased. During the worst of the downturn, the private sector was hammered with massive job losses, while the public sector held fairly steady.

-6/8/12 Investors Business Daily: “Private-sector jobs are still down by 4.6 million, or 4?from January 2008, when overall employment peaked Meanwhile government jobs are down just 407,000, or 1.8?Federal employment actually is 225,000 jobs above its January 2008 level, an 11.4?ncrease.”

8/15/12 USA Today/Gannet:
-More than 21,000 retired federal workers receive lifetime government pensions of $100,000 or more per year.
-Government pensions are vastly more generous than those in the private sector," says economist Veronique de Rugy of the market-oriented Mercatus Center: The average federal pension pays $32,824 annually. The average state and local government pension pays $24,373, Census data show. The average military pension is $22,492. ExxonMobilExxon Corporation, which has one of the best remaining private pensions, pays an average of $18,250 per retiree.
-Pension payments cost $70 billion last year, plus $13 billion for retiree health care. Taxpayers face a $2 trillion unfunded liability — the amount needed to cover future benefits — for these programs, according to the government's audited financial statement.

-9/27/12 http://www.weeklystandard.com/blogs/americans-incomes-have-fallen-3040-during-obama-recovery_653116.html:
American household’s real (inflation-adjusted) income has actually dropped 5.7 percent during the Obama “recovery.” Using constant 2012 dollars (to adjust for inflation), the median annual income of American households was $53,718 as of June 2009, the last month of the recession. Now, after 38 months of this “recovery,” it has fallen to $50,678 — a drop of $3,040 per household.

And as though that not enough:
-Google search Obama saying, without a teleprompter, "Under my plan, energy prices would necessarily skyrocket" and watch him actually say that (in September, 2008).
-11/3/08 LA Times: “So if somebody wants to build a coal-powered plant, they can; it's just that it will bankrupt them because they're going to be charged a huge sum for all that greenhouse gas that's being emitted."

9/5/12 CNBC News http://www.cnbc.com/id/48905756: The World Economic Forum survey ranks nations by competitiveness: the US fell two positions to the 7th spot marking its fourth year of decline.