i think it most likely Warren drops after Super Tuesday. however, with that being said... i think it could hinge on what exactly happens Tuesday. if Warren is so low in the outcome that her continued presence won't matter in terms of the amount of support Bernie garners, i think it is all but a given. if she manages to put even a noticeable dent in Sanders delegate count, then she will be supported to continue as the DNC/establishment wants nothing more than a contested convention to deny Bernie. the only way they can achieve that objective, rationally, is for him not to have enough delegates on the first count so that the Super Delegates in the second count get to deny it for him. remember, she just got $14mm in unaccounted for support after NH it will continue if it is a viable road.