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.
... Cavendish
William Clowes Printing Museum[?], Beccles
West Sussex
Amberley Working Museum, Arundel
Fishbourne Roman Palace
West Yorkshire
Museum of Rail ...