Sanders campaigned hard for Clinton but her campaign cancelled some of their joint events.

https://www.wsj.com/articles/bernie-sanders-packs-schedule-with-campaign-stops-for-hillary-clinton-1475928002

http://www.latimes.com/nation/politics/trailguide/la-na-trailguide-updates-road-trip-benrie-sanders-hits-the-1472821260-htmlstory.html

https://www.usatoday.com/story/news/politics/onpolitics/2016/09/30/bernie-sanders-step-up-campaign-schedule-hillary-clinton/91342564/

http://www.washingtontimes.com/news/2016/oct/3/bernie-sanders-hillary-clinton-campaign-events-can/