It was more than that Paul.  Vinis repeatedly attacked Clark's record.   And he did not offer any vigorous defense.   Nor did he go on the offensive and attack any of the numerous vulnerabilities that Vinis had.   Apparently he thought he could win this election being a gentleman, and refraining from criticizing Vinis.

However, elections don't work that way.   Attack campaigns do work!   That is why politicians use them so much.