As the mother of a male child, I can tell you how your partner might become the enemy. Let's say you are a hard-core conservative, fully supportive of the war efforts overseas, and I am a liberal, not supportive of the war efforts, and together we have an 17 1/2 year old male child. Let's say the conservative party is pushing for a draft because people aren't lining up to support the war effort in the way that was anticipated.
I would consider you the enemy if you were to favor anything that would jeopardize the safety of my child. And I would consider you the enemy if you were to vote for any politician who favored the draft, because that might affect my child.
You see?