Interestingly, Obama's 49 percent approval now exactly matches his average score in the Gallup tracking poll throughout his first term.

Former President George W. Bush enjoyed a longer honeymoon period after his reelection, not falling back below 50 percent until April of his second term. But Bush also saw far greater variation during his presidency, rocketing between an 89 percent approval rating in the immediate aftermath of the 9/11 attacks to a 27 percent approval rating toward the end of his presidency.