Internal Boundaries
Not every consequential boundary separates two countries — the lines drawn inside a single state, for its own voting districts, can shape political power just as much as any international border.
Redistricting is the routine process of redrawing electoral district boundaries, typically after a census updates population counts, since districts are supposed to represent roughly equal numbers of people. Gerrymandering is redistricting done with deliberate political intent — drawing district lines specifically to benefit one party or group’s electoral chances rather than to reflect population or community boundaries fairly.
Two named techniques describe how this works. Packing concentrates the opposing party’s voters into as few districts as possible, letting them win those districts by huge, wasted margins while losing influence everywhere else. Cracking does the opposite — spreading opposing voters thinly across many districts so they never reach a majority in any single one. Both techniques manipulate vote efficiency rather than the total vote count, which is exactly why gerrymandering can produce a legislature where one party wins most of the seats despite losing the statewide popular vote.
Bizarrely shaped, non-compact districts — long, winding, oddly angled — are often the visible signature of this manipulation. And because these consequences are real and serious, gerrymandered maps are regularly challenged in court, a reminder that a boundary doesn’t need to separate two sovereign states to carry major political weight.