In their (and the current systems) defense, they spent the money and failed; but the problem is that Romney was the candidate because that’s what the moneyed elite wanted. The base would have probably nominated Santorum in the end. Who knows? Do you really believe the base of the Democratic party wanted John Kerry as their nominee? The money speaks louder than the voices of millions.
https://www.movetoamend.org/ (gives a privacy error which can be bypassed if you are really interested. -ed.)