The FT's head of visual and data journalism Alan Smith investigates gerrymandering, using tiddlywinks and a salamander. He is joined by James Cheshire, a professor of geographic information and cartography at University College London.

0:27 - Using tiddlywinks to explain voting boundaries

4:55 - US voting boundaries: Gerrymandering?

6:28 - Modern examples in the US

7:10 - Goofy kicking Donald Duck

7:42 - The Broken Winged Pterodactyl

10:58 - How North Carolina's electoral maps have changed

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