William Cowan, a Massachusetts lawyer who will take John Kerry's place in the Senate until a special election can be held to replace the Bay State Democrat, about to become the next secretary of state, has donated more than $36,000 to candidates for state and federal office, according to data downloaded from Sunlight's Influence Explorer.

All of the recipients of Cowan's largesse were Democrats with two notable exceptions: In 2002, he made a donation of $200 to Republican Mitt Romney. The 2012 GOP presidential nominee was then running what would turn out to be a successful ...