Along with all that money comes expectations of a payoff. Campaign finance is a joke. What voters want is complete transparency on political donations at $1000 and higher amounts. We want to know who is providing the money. Neither Democrats nor Republicans push for it since transparency is not desired by many rich and corrupt donors. 

The unnamed operatives in both political parties also are not being truthful when they try to blame the problems on open primaries. The far left and far right just don't want open primaries. Open primaries allow more people to vote instead of allowing them to push forward with their extremism during the nomination process. The political parties mostly exist to serve their own needs to gather votes and money rather than the public interest despite their claims to the contrary.