ys burg ▁Address . ▁" Don ' t ▁swap ▁horses ▁in ▁the ▁middle ▁of ▁the ▁stream ." ▁- ▁s log an ▁of ▁Abraham ▁Lincoln ▁and ▁the ▁National ▁Union ▁Party ▁during ▁the ▁ 1 8 6 4 ▁president ial ▁election , ▁arg uing ▁in ▁favor ▁of ▁retain ing ▁Lincoln ▁as ▁President ▁during ▁the ▁American ▁Civil ▁War . ▁The ▁s log an ▁has ▁since ▁been ▁adopted ▁by ▁various ▁inc umb ents ▁during ▁times ▁of ▁crisis , ▁most ▁fam ously ▁by ▁Franklin ▁D . ▁Ro ose vel t ▁in ▁the ▁ 1 9 4 4 ▁president ial ▁election ▁during ▁World ▁War ▁II ▁and ▁by ▁George ▁W . ▁Bush ▁in ▁the ▁ 2 0 0 4 ▁president ial ▁election ▁during ▁the ▁War ▁on ▁T error . ▁" I ▁will ▁not ▁accept ▁if ▁nominated ▁and ▁will ▁not ▁serve ▁if ▁elected ," ▁said ▁by ▁William ▁T ec um seh ▁Sh erman ▁when ▁asked ▁about ▁a ▁president ial ▁bid ▁during ▁the ▁ 1 8 8 4 ▁president ial ▁election . ▁Re pe ated ▁and ▁par ap hr ased ▁by ▁various ▁polit icians ▁and ▁public ▁figures ▁in ▁later ▁years , ▁including ▁Ly nd on ▁B . ▁Johnson ▁in ▁ 1 9 6 8 , ▁D w ight ▁D . ▁Eisen h ower ▁in ▁the ▁ 1 9 4 0 s , ▁Dick ▁Chen ey ▁in ▁ 2 0 0 8 , ▁and ▁Stephen ▁King ▁in ▁reference ▁to ▁the ▁ 2 0 1 8 ▁Maine ▁g ubern atorial ▁election . ▁" You ▁shall ▁not ▁press ▁down ▁upon ▁the ▁brow ▁of ▁labor ▁this