Considering the criteria of this being a poll from 2050 - I vote Obama. 1) He would be more recent of those listed, and likely the last to die of those on the list, meaning there will be a few who remember him. 2) I think Obama's achievements (if only for being the first non-white president) will make him stand out in people's minds. Biden will probably be most remembered for defeating Trump (who by 2050 will probably be regarded as the worst president in US history). Reagan was personally liked, but already has a somewhat controversial legacy. Eisenhower presidency would be 100 years in the past, and there will be nobody alive who remembered him or to romanticize about the 1950s. Bush really has nothing positive to his name except that he was president on 9/11. Most of the legislative "accomplishments" of his time have not aged well, have been surpassed or replaced, or criticized. Really I see no other choice here than Obama.
