Do you want the correct answer or the politically correct answer?
PC Answer: Why, Baker v. Carr ensures that every political office is fairly voted upon by the electorate under the fundamental rule of one man, one vote, and enshrining the Constitutional guarantee that each state have a republican form of government.
Correct Answer: The judge is doing exactly what you fear, saying, "Federalism takes it up the back door, the state bosses better figure out quick who really runs the show--it's FEDERAL bosses, us judges."
You seem not to understand federalism, the constitution or American history.