What is the process of putting a single political issue up to a vote by the general electorate?

Which points did Chief Justice Roger B. Taney use to justify the Supreme Court's ruling in the Dred Scott case?

The Necessary and Proper Clause of the Constitution, the Due Process Clause of the Fifth Amendment, and the fact that African Americans were not citizens.
The Commerce Clause of the Constitution, the Elastic Clause of the Sixth Amendment, and the practice of judicial review established in Gibbons v. Ogden.
The Property Clause of the Constitution, the Due Process Clause of the Fifth Amendment, and the fact that African Americans were not citizens.
The practice of judicial review established in Marbury v. Madison, the Property Clause of the Constitution, and the Due Process Clause of the Fifth Amendment.

What do we call a vote on a single political question?

A referendum (plural: referendums or less commonly referenda) is a direct vote by the electorate on a proposal, law, or political issue.

What is the nomination process?

To become the presidential nominee, a candidate typically has to win a majority of delegates. This usually happens through the party's state primaries and caucuses. State delegates go to the national convention to vote to confirm their choice of candidates.

What's political gerrymandering?

In representative democracies, gerrymandering (/ˈdʒɛrimændərɪŋ/, originally /ˈɡɛrimændərɪŋ/) is the political manipulation of electoral district boundaries with the intent of creating undue advantage for a party, group, or socio-economic class within the constituency.

What is gerrymandering in simple terms?

Gerrymandering is when a political group tries to change a voting district to create a result that helps them or hurts the group who is against them.