Claim: Rob Portman (a candidate for senate running against the video's supporter, Ted Strickland) should not be elected to senate because of his "blocking of common-sense gun safety laws" and his vote to "allow suspected terrorists to buy guns".
Evidence: Rob portman voted against a democratic party proposed ammendment to put a ban on sale of guns to terrorists or suspected terrorists.
Underlying Assumption: It is assumed in the advertisment that the vote against his party was indeed the result of Portman's willingness to allow guns to be sold to those suspected of terrorism.
Strengths: The ad is strong in its emotional appeal, and the soldier speaking gives credibility