Interestingly, former Republican presidential nominee Mitt Romney has also earned a bump in popularity since Election Day. The former Massachusetts governor saw his favorability cross the 50 percent threshold — up from 46 percent before Election Day. That means Romney has actually gained more in his favorability ratings than the president, despite criticism from many in the Republican Party following his loss.

"Americans view both 2012 presidential candidates more positively now that the campaign is over, as Obama turns his attention to governing for the next four years and Romney to a future role outside of presidential politics," Gallup's Jeffrey M. Jones said in a statement.

Romney's bump mirrors that of Sen. John McCainJohn Sidney McCainGOP rushes to cut ties to Moore GOP strategist: 'There needs to be a repudiation' of Roy Moore by Republicans World leaders reach agreement on trade deal without United States: report MORE in 2008. The Arizona Republican saw his favorability jump to 64 percent from 60 percent after being defeated in President Obama's first national campaign.

Both the Democratic and Republican parties also saw improvement since the bitter days before the election. Democrats posted a 6-point improvement following their victories on Election Day, improving from 45 to 51 percent. Republicans, meanwhile, gained a point, moving from 42 to 43 percent.