He lived in MD. He supported and voted for Bill Clinton.
And you know this how? From Wikipedia:
Political views
A longtime holder of conservative and Republican views, Clancy’s books bear dedications to American conservative political figures, most notably Ronald Reagan. A week after the September 11, 2001 attacks, on The O’Reilly Factor, Clancy claimed that left-wing politicians in the United States were partly responsible for September 11 due to their “gutting” of the Central Intelligence Agency.[12]
Clancy was also a Life Member of the National Rifle Association since 1978.[17]