An iron vote is a Taiwanese political term for a voter that can be reliabily counted on to vote for one party or another. These usually include strong supporters of Taiwan independence or Chinese reunification.
The Kuomintang was severely hurt in 2000 by the loss of iron votes.
... housing units at an average density of 143.0/km² (366.8/mi²). The racial makeup of the village is 95.20% White, 0.00% African American, 0.00% Native American, ...