The show debuted September 17 , 2011 as Up with Chris Hayes .
The show was hosted by Hayes until March 2013 when he left for All In with Chris Hayes , a new MSNBC weekday primetime program .
The show debuted September 17 , 2011 as Up with Chris Hayes , and was hosted by Hayes until March 2013 when he left for All In with Chris Hayes , a new MSNBC weekday primetime program .