Reactions Republican candidates:
Donald Trump: California shooting looks very bad. Good luck to law enforcement and God bless. This is when our police are so appreciated!
Ben Carson: My thoughts and prayers are with the shooting victims and their families in San Bernardino.
Jeb Bush: Praying for the victims, their families & the San Bernardino first responders in the wake of this tragic shooting.
Mike Huckabee: Praying for those impacted by the shooting in California today.
Reactions from Democratic candidates:
Hillary Clinton: I refuse to accept this as normal. We must take action to stop gun violence now. -H
Bernie Sanders: Mass shootings are becoming an almost-everyday occurrence in this country. This sickening and senseless gun violence must stop.
Martin O’Malley: Horrifying news out of #SanBernardino. Enough is enough: it's time to stand up to the @NRA and enact meaningful gun safety laws