Up until this point, we’ve been pretty hesitant to read too much into any one of the post-debate polls — largely because for each poll that showed Sen. Bernie Sanders on the upswing, there was another poll that showed him on the downturn. But now with four more national polls and six early-state surveys (three from Iowa and three from New Hampshire) since we last checked in, we’ve got a much clearer picture of where things stand. And one thing that’s immediately obvious is that Sanders really has gained in the polls. CONT.
Geoffrey Skelley, FiveThirtyEight