Daniel Cerone, the executive producer of Constantine took to his twitter account to make some things about the show very clear starting with the show has not been cancelled. NBC won't decide upon the fate of the show until May, after it gets a look at their new pilots as well as a second season pitch from the show's writers. In the mean time, the network is watching how the show continues to do through other mediums like NBC.com, hulu, iTunes, Amazon Prime as well as foreign markets. According to the writer foreign popularity can make a huge difference like it has on the series Hannibal.
The studio holds options on the cast and writers until mid-June, so that won't be an issue and Cerone is certain they will have a decision by the up fronts (3rd week of May). He says it's not time for a letter writing campaign yet, but re-watching the episodes through some of the above mentioned outlets would definitely help
A big positive for the show has been the social media tracking which is becoming more and more important to networks. The show continues to rise in that area going from 16K to 21K to 29K over the last three episodes.
So if you want to help save Constantine, re-watch as many episodes as you can on as many platforms as you can. .
.@Dragonpiece NBC made some early pickups but #Constantine not canceled. We'll pitch them our plans for 2nd season in May. Then they decide.
— Daniel Cerone (@DanielVCerone) February 17, 2015
.@SherrySherryy1 Thank you. Studio holds options on #Constantine actors and writers till mid June. Writing my own pilot ideas till we know.
— Daniel Cerone (@DanielVCerone) February 17, 2015
.@Secretoriginz @Dragonpiece No. We will definitely have an answer by up fronts. Damn, when did TV fans get so in the know? #Constantine
— Daniel Cerone (@DanielVCerone) February 17, 2015
#Constantine finale: Social media volume was highest it has been all season (3 episode track: 16K, 21K, 29K). #SaveConstantine #Hellblazers
— Daniel Cerone (@DanielVCerone) February 17, 2015
.@TheCodeCrimson We'll let you know if time comes for letter writing campaign. #Constantine #Hellblazers #SaveConstantine
— Daniel Cerone (@DanielVCerone) February 17, 2015
.@mmoroca For a studio there are foreign and domestic sales. Foreign sales can drive a series. Keep it on air. Look at #Hannibal for proof.
— Daniel Cerone (@DanielVCerone) February 17, 2015
.@justdreamin91 FYI, NBC won't decide on #Constantine renewal until May, after they see their new pilots. That will be time to activate.
— Daniel Cerone (@DanielVCerone) February 19, 2015