The problem is that political parties are fueled by donations, and it's hard to get people to donate for something like that. Not to mention you'd be competing with local/state/House/Senate elections with actual candidates for that fundraising money. I've donated politically in the past and even having only given small amounts, I still get emails daily and calls monthly asking me to donate to about half a dozen groups (many of which I've never donated to). Heck, wounded firefighters and cancer-striken kids have a low conversion rate for their fundraising - "money for technical systems to help a candidate to be named later" is even worse.