I then took the most popular vote getters from the previous two tracks threw in Richard Nixon for the hell of it and came up with this graph showing the most popular previous president in American history - George Washington. While Lincoln is a close second, the rest of the previous presidents seem to meld together in a mushy line at the bottom of the graph. (BTW, the big surge for Nixon in 2004 was when the identity of Deep Throat was revealed.)
It is now official - George Washington is this nation's most popular previous president.
The most popular presidential searches on google.com.
(I deliberately left off the most recent previous presidents since not enough time has elapsed since they left office.)