I'm back after a while away, and noticed this quote used in the Liberal discussion:

While it is generally known that Limosine Liberal Paul Martin owns Canada Steamship Lines, a great shroud of secrecy surrounds the details of his company.

The thing is, Paul Martin is a member of the Liberal Party [of Canada]. So in this quote, the person was seeking to make a pun on the phrase "limousine liberal". Just wanted to clarify. I mean, the guy literally is a Liberal. Card-carrying and everything!