The conventional wisdom in recent weeks has been that President Barack Obama's approval rating has been in decline. And compared to his post-inauguration high, it certainly has.

Today, Gallup offers some evidence that Obama's approval number is edging up again.

Obama's approval rating in Gallup's daily tracking poll has now gone up four straight days, and this afternoon stands at 55%.

Meanwhile, the percentage of those polled who don't approve of the job Obama is doing has gone down three straight days and stands at 38%.

The gap between the two numbers — 17 percentage points — is the widest it's been since mid-August.

Other pollsters have other numbers, as Real Clear Politics' chart shows.

Pollster.com collects the results from many, and its "consensus" shows Obama's approval rating at 50.9% and his disapproval rating at 43.9%: