Answer: hhh

AnswerCrossword Clue
HHHEx-V.P.'s monogram
HHHPrimary loser to J.F.K. in 1960
HHHRMN opponent
HHHL.B.J. veep
HHHR.M.N. opponent
HHHFamed political initials from Minnesota
HHHLoser to R.M.N., 1968
HHHL.B.J.'s veep
HHHLoser to R.M.N. in '68
HHH1968 election monogram
HHHL.B.J.'s Vice President
HHHLoser to R.M.N.: 1968
HHHA loser to R.M.N.
HHHLoser to R.M.N.
HHHVice-Presidential monogram
HHHL.B.J.'s V.P.
HHHLBJ's V.P.
HHHPolitical monogram
HHHVeep of the '60s
HHHVeep under LBJ
HHHLBJ's vice president
HHH"The Happy Warrior" of Minn.
HHHHe lost to RMN
HHHRival of RMN in 1968
HHHLoser to RMN in 1968
HHH'60s VP
HHHOnly South Dakota-born VP
HHH1968 loser to RMN
HHHLBJ's VP
HHHVice president under LBJ
HHHPresidential also-ran from Minn.
HHHLBJ's veep