A flourish too far

I take "ignorant partisanship" to mean support or opposition to some policy or person based not upon factual opposition, but rather upon political affiliation. I take "partisan ignorance" to mean a choice to not become informed about a particular policy or person because of ones own political affiliation. Are there really discrete individuals, as Jim Hoagland claims, some of whom are motivated by one and some of whom are motivated by others? Highly dubious.

Bonus points for noting the redundant phrase above which is almost certainly as problematic as Hoagland's phrasing which I am criticizing.

Update, slightly over one year later: Isn't "discrete individuals" redundant? What would a non-discrete individual be like?