Total ad spending (combined by candidate and PACs supporting that candidate) per vote received in primaries and caucuses among the remaining presidential candidates through the end of March:
Trump's doing the most with the least and the socialist is doing the least with the most. Fitting.
If we consider those no longer actively campaigning, though, we see that Bernie is a penny-pinching miser compared to the most profligate presidential aspirant of the election cycle. ¡Jabe! and his allied PACs spent a staggering $849.72 for each vote he picked up in the first three states. ¡Jabe!'s votes were orders of magnitude more expensive than even Bernie's have been.
Put in an even more humiliating way, ¡Jabe! spent 37,765% more for each vote he received than Trump has.