Abraham Lincoln did not run on a platform to free the slaves. Nor did he win in 1860 because people thought he would. He ran on the promise to save the Union. Freeing the slaves in 1863 was as much political ploy as it was an attempt to tilt the war to the side of the north.
Lyndon Johnson did not win in 1964 on the promise of assuring Blacks could vote. No matter what nobility can be seen in his successful effort to pass the voting rights act, Johnson was ever aware of where he stood with the American public. A book entitled “Cannan’s Edge” details the ultimately nasty reality of what really happened between and to both Johnson and Martin Luther King. Both for a time used each other for their own gains. That’s how politics works. Don’t take my word for this. Read the review..
Politicians who run solely on principle turn into “lobbyists”. It is an ugly reality, one that the left needs to not only take to heart, but one that it needs to learn up and down, backwards and forwards.
Until then, pray for miracles, but cover your ass!