Sometimes. But Huckster IS a fraud and it is well-documented on this site.
Hucksters (and Santorum’s) entire purpose in this race was to try to divide the conservative field to make way for Yeb or Rubio.
They failed and this is why their funders pulled the plug after Iowa.
I don't see any evidence of that. I think once someone has been bitten by the bug, and especially if they actually won a primary, they keep dreaming that lightning will strike again and they have a chance. All these guys have a vision that they could be president. And in the case of Huck and Santorum they had nothing better to do and nothing to lose.