Conservative, Moderate, Liberal? How many people fall into these categories depends upon how you define the categories, and in particular upon what questions you ask.
Most likely people will vote as they have previously voted, plus being receptive to how current issues are being framed.
I am not aware of anyone saying the things Trump says ever having gotten elected.
I would still say that Rubio and Cruz are quite a bit to the Right of the Republican Party center.
Clinton is of course a centrist candidtate, as she has always sought to position herself.
Bernie Sanders is a bit to the Left of most of the Democratic Party. But in that he is emphasizing economic justice and caring about people, and then has proposed universal health care and tuition free college, he is actually well within mainstream American political discourse, while being still to the Right of most of Western Europe.
SJG