Comment: Here's your argument:

(See in situ)

In reply to comment: Okay I have heard many (see in situ)

Here's your argument:

"You don't like Rand because he's a Republican." - That's an argument. You're taking a stance.

Ever thought that maybe some people just don't like Rand?

If someone didn't want to vote for Rand because he was Republican, I'd have to guess their main message would be about why they dislike the Republican party, not why they dislike Rand.