Rubuta ci gaba ga wannan sakin layi - A cikin 1968 Branigin ya sami kulawar ƙasa lokacin da ya yi takara a matsayin mai tsayawa ga Lyndon B. Johnson a cikin shugabancin shugabancin Democrat na Indiana. Johnson ya fice daga tseren a ranar 31 ga Maris, 1968, amma Branigin ya ci gaba da yin takara a matsayin dan takarar da aka fi so da Robert F. Kennedy da Eugene McCarthy. Branigin ya yi fatan kokarinsa zai sami matsayi mafi girma ga Indiana a taron 1968 na Democrat.
a birnin Chicago. Branigin ya gama na biyu a cikin na farko zuwa Kennedy.