Rachel Maddow looks back at how frequently the lead in the 2012 Republican primary changed hands, but notes that the 2016 race is following a different course and Donald Trump's lead has been so consistent that political observers are beginning to believe it's not a fluke.Oct. 20, 2015
UP NEXT
DOJ's reported interest in Trump foreign business deals reframes scope of Mar-a-Lago probe
03:24
Saddled with Trump, unpopular policies, GOP toys with tanking economy under Biden
09:03
Carroll moves to teach Trump lesson he failed to learn from loss in court
07:29
Bicyclist brings white supremacists low with skilled heckling
01:45
Durham report, long-awaited by Trump supporters, fails to deliver on hype
06:13
E. Jean Carroll 'thrilled' to finally hold Donald Trump to account for his lies