Departing Liberal Democrat MP Sarah Teather has said the breaking point for her faith in her party came when it backed the Tories' planned cap on welfare, while she was in Government.
"It was the moment of realising that my own party was just as afraid of public opinion as the Labour Party. Something did break for me that was never, ever repaired," she said.
Ms Teather said her role in the Coalition put her in an impossibly compromised position.
"I was spending hours worrying about how to balance fighting for what I believed in and being true to the stuff that took me into politics, while not being disloyal to my colleagues," she said.
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The carnival season is nearing its traditional all-out Fat Tuesday celebration.
Some areas may remain cloudy and damp through the afternoon but it will be mild with highs reaching 14 Celsius.
The mandate is scheduled for publication on Thursday.