Reply #4: This is the part that ties them together:

[FormerRepublican]

"ASG was organized out of the same Washington townhouse as another DeLay-connected operation, the US Family Network, established in 1996 as a secret mini-war room for attacking Democratic candidates. In 1999 Buckham--then operating on behalf of USFN--funneled some $300,000 in soft-money contributions from the National Republican Congressional Committee (NRCC) through USFN to an organization called Americans for Economic Growth, which in turn used the funds to run attack ads against Democratic candidates. Buckham ran the townhouse operation with longtime DeLay crony Jim Ellis. USFN was established almost entirely with money from Abramoff's clients, according to a report in the Washington Post."

Specifically, the last sentence. Or I guess a better way to put it is that both Cunningham and Abramoff are tied to Delay, and thus Delay ties them together.