I don't know how much truth really is in these statements as many times the media exaggerates things. Maybe those money were used for promoting purposes, like protocol dinners for important people, gift vouchers or conferences in some exotic place. Although we are talking about a large sum, we can't judge only on what people say. Until we have some solid evidence, it's impossible to be sure that those founds were really "slushed".

Leadership PACs are supposed to be used to fund other members' campaigns, but about half of the $112 million spent by leadership PACs in the two year election cycle that led to the 2008 election, was spent on entertainment, administrative costs, fundraising and other categories. Anthony

This story caught my eye today because it is an example of how campaign money can be used to get around ethics regulations. Though ethics rules have banned lobbyists from funding meals, travel and entertainment for lawmakers and staff, they can still do so indirectly through campaign leadership political action committees. Mike @ sweating and how to stop sweating

This story caught my eye today because it is an example of how campaign money can be used to get around ethics regulations. Though ethics rules have banned lobbyists from funding meals, travel and entertainment for lawmakers and staff, they can still do so indirectly through campaign leadership political action committees.Google Redirect - Google Virus

You should also check out the interactive version that FLYP did on PACs:

http://www.flypmedia.com/issues/plus/21/#1/1