Steve Kornacki recalibrates what it would take for Bernie Sanders to win a majority of pledged Democratic delegates to defeat Hillary Clinton for the nomination.May 18, 2016
UP NEXT
Key twist in Trump's 'catch and kill' scheme will be hard for him to explain away
10:48
'He wrote all of it down??': Prosecutors claim to have handwritten notes of Trump hush money scheme
09:46
Prosecutors use National Enquirer witness to show Trump's in-plain-sight election influence scheme
08:26
Trump's defense stumbles out of the gate with interruptions to opening statement
08:11
'Like a child, give him a time out': Weissmann urges 'firm hand' as Trump flouts gag order
05:39
'Miserable' and 'Annoyed': What Rachel Maddow saw inside Trump's criminal trial