[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/02/16/art.bush1.gi.jpg caption=" Historians have ranked Bush the seventh worst president."]
(CNN) - It's been 145 years since he appeared on a ballot, but America's admiration for the man who saved the union and sparked the end of slavery is stronger than ever, according to a new presidential survey.
Abraham Lincoln finished first in a ranking by historians of the 42 former White House occupants released over Presidents Day weekend.
The news wasn't quite as good for the latest addition to the nation's most exclusive fraternity; George W. Bush finished 36th in the survey, narrowly edging out the likes of historical also-rans Millard Fillmore, Warren Harding and Franklin Pierce.
James Buchanan - the man who watched helplessly as the nation lurched toward civil war in the 1850s - finished last.
"As much as is possible, we created a poll that was non-partisan, judicious and fair minded," said Rice University professor Douglas Brinkley, who helped organize the survey of 65 historians for cable television network C-SPAN.
The survey - which asked participants to rank each president on 10 qualities of leadership ranging from public persuasion and economic management to international relations and moral authority - was the network's second since 2000.
The hero of Springfield, Illinois, finished first nine years ago as well.
"It's fitting that for the 200th birthday of Abraham Lincoln that he remains at the top of these presidential rankings," Brinkley said.
"Lincoln continues to rank at the top in all categories because he is perceived to embody the nation's avowed core values: integrity, moderation, persistence in the pursuit of honorable goals, respect for human rights, compassion," Howard University's Edna Medford added.
Founding father George Washington finished second in the new survey, followed by Franklin D. Roosevelt, Theodore Roosevelt, and Harry Truman, in that order.
Bill Clinton registered the greatest gain among recent presidents, jumping from 21st to 15th in the survey. Ronald Reagan edged forward from 11th to 10th overall, while George H.W. Bush moved up from 20th to 18th.
The prize for the greatest jump in approval from historians over the last nine years, however, went to a president who has often sat near the bottom of such rankings: Ulysses S. Grant. The Civil War general jumped 10 notches, from 33rd to 23rd.
"Bill Clinton and Ulysses S. Grant aren't often mentioned in the same sentence - until now," historian Richard Norton Smith said. "Participants in the latest (survey) have boosted each man significantly higher than in the original survey conducted in 2000. All of which goes to show two things: the fluidity with which presidential reputations are judged, and the difficulty of assessing any president who has only just recently left office."