We need to qualify this often-quoted statement. The last senator winning the White House directly from the senate was JFK. But he was not the last senator to win the WH. His sucessors, LBJ and Nixon were both senators once.
I think the fact that LBJ and Nixon were both Senators during their political career is overshadowed by the fact that they both were Vice-Presidents before they became President. The Vice-Presidency takes them out of the 'Senator' as highest Federal office held category that was true in JFK's case.
The Senatorial to Presidential truism stands, for now...
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