the only way any president can really be judged as to "worst" is with the proper historical perspective gained by... wait for it...
HISTORY
imo (and lots of others), carter was clearly the worst in recent memory
carter is proof positive that smart and well meaning =/= effective president
and let's not forget that bush won reelection by a majority
that does not bode well for the "worst president" moniker.
note also that Carter was the FIRST PRESIDENT SINCE 1932 TO LOSE REELECTION

people were fed up with the guy, and rightly so...
HISTORY
imo (and lots of others), carter was clearly the worst in recent memory
carter is proof positive that smart and well meaning =/= effective president
and let's not forget that bush won reelection by a majority
that does not bode well for the "worst president" moniker.
note also that Carter was the FIRST PRESIDENT SINCE 1932 TO LOSE REELECTION

people were fed up with the guy, and rightly so...