The hospital watchdog is publishing its report today into complaints of staff shortages at Bristol Children's Hospital.
The Care Quality Commission investigation followed the death of seven-year-old Luke Jenkins and four-year-old Sean Turner following heart operations. The hospital has some of the best surgical results in the country.
The CQC made a surprise visit to the hospital last month in response to concerns raised.
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The Liberal Democrats won the Bath constituency in 2010. With the current MP standing down, the Conservatives are targeting this seat.
Bridgwater and West Somerset is considered a Conservative safe seat - in 2010 they had a majority of over 9,000 votes.
Labour won the Bristol East constituency in 2010 with a majority of 3,722 votes. It's considered a safe seat.