The federal tab for security at both conventions is expected to be $100 million
http://www.cnn.com/2004/ALLPOLITICS/07/24/dems.main/

Maybe I'm just stingy, but the last time I checked, political parties
were private organizations that exist to promote the
careers of their politician/members. Can't they pay for their own
security? I don't have a hundred million to spare this month.