There have been 44 different people acting as presidents, of which 6 were 4- (all before 20th century) 7 were 1+/3- (the last being a shoe-in) 14 were 2+/2- 13 were 3+/1- 10 were 4+ (only 1 in 20th century and 1 in 21st century) Of the 21 presidents elected since 1900, not one has been type 4- *Grover Cleveland was elected on two separate occasions so counted only once