Interesting, but let's put it into perspective. $14,000 over a period of four years is not exactly huge.
As for the Liberal Party, sometimes it's too the left of the NY Democrat party, and sometimes it's the more honest of the two. In this case, they were supporting Giuliani against Dinkins. If I were a NYC businessman, or even a Mafia capo, I'd put my money against Dinkins. As, I believe, the Conservative Party did at that time. Of the available candidates for Mayor, Giuliani was the only possible choice except for corrupt freeloaders.
$14,000 over a period of four years is not exactly huge-----yes, but consider not the amount, but from where it emanates.