http://forum.wordreference.com/showthread.php?t=2025113Wisconsin does not have a counterpart in the UK so there is little reason for a British person to say this word. This is one of those rare exceptions where I would say the American version takes precedence.
The vowel in the last syllable is reducing towards a schwi, probably the sound at the end of Richardson.
哈哈哈哈哈哈。