Thompson's repentance

Another MoJ reader points out that, since the 1991 lobbying work at issue, Thompson has:

come to a very firm pro life position. His Senate record from 1994 until 2002 was perfect; he was endorsed by the National Right to Life in both elections. I believe that his thinking on the matter further benefited from his marriage to a thoughtful pro-life woman, and the births of his two young children (with the attendant diagnostic technologies to view life in the womb, etc.). I think his recent public statements confirm this; he is unequivocally opposed to embryo-destructive research, abortion, etc. Check out his video to the NLRC.

As such, as to whether voting for Thompson could amount to material or formal cooperation with evil, "if a politician repents of a life-destructive view and goes on to consistently affirms pro life values for 15 years, it seems to me that supporting that politician doesn't raise any issues on that score, does it?"