A national Gallup poll of adults shows that 50% of Americans believe Barack Obama's presidency has been "a failure," while 44% of Americans say Obama's presidency has been "a success":
Gallup also reports that "President Obama's average job approval rating for the month of February in Gallup Daily tracking was 45%, with 47% disapproving, unchanged from January.... The 50% approval mark is a crucial one for presidents in a re-election year. All incumbents who have been elected to a second term had a 50% or higher average approval rating by February of that year, and in the case of all but George W. Bush, they maintained that through Election Day."
The latest Gallup numbers show an uptick for the president, with 48% approving and 44% disapproving.