(CNN) - For the first time since 2005, more Americans have a favorable view of former President George W. Bush than an unfavorable view.
The survey was conducted entirely before reports emerged last week of U.S. government surveillance programs, some of which began under the Bush administration.
As time goes by, presidents generally see their numbers improve the longer they are out of office. Gallup numbers show presidents Jimmy Carter, Ronald Reagan, George H.W. Bush and Bill Clinton all had favorable ratings over 60% when last measured.
Bush has largely stayed out of the limelight since leaving the White House, but he gained a more public profile in April and May with the opening of his presidential library in Dallas.
The new Gallup poll results mark a stark contrast from January 2009, when the 43rd president left office with a favorable rating of 40% and an unfavorable rating of 59%. Two months later, the gap widened to 35% favorable and 63% unfavorable.
Since mid-2010, his favorable ratings have hovered around the mid-40s, while his unfavorable rating gradually decreased to 46% from 53%.
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Breaking it down further, Bush has seen improvement among independents and both political parties. Twenty-four percent of Democrats view him in a positive light, according to the new survey, compared to 10% in January 2009. Republicans saw a 14 percentage point jump, with 84% now having a positive opinion of Bush.
The biggest increase came among independents. While 29% gave him a favorable rating in 2009, that number now stands at 46%.
The Gallup results fall in line with a CNN/ORC International Poll released in late April, shortly before Bush's library dedication ceremony. Those results indicated the number of people who believed Bush's presidency was a failure had significantly dropped (by 13 percentage points) since he left office.
Gallup surveyed 1,529 adults by telephone from June 1 to June 4. The poll has a sampling error of plus or minus three percentage points.