Romney: Arkansas, Mississippi, Kentucky, Oklahoma, Alabama, Tennessee, Indiana, West Virginia, South Carolina, Georgia, Kansas, Louisiana, Texas, Wyoming, North Dakota, South Dakota, Nebraska, Utah, Montana, Missouri, Arizona
Obama: Connecticut, Delaware, Washington DC, Illinois, Maine, Massachusetts, Maryland, Vermont, Rhode Island, New York, Michigan, New Mexico, Pennsylvania, New York, New Jersey, Wisconsin, New Hampshire
The Democratic-favouring west coast states have yet to be called.
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Both the insulation and tiles used in cladding on the Grenfell Tower block also failed safety tests, police said.
Survivors and the families of victims of the Grenfell Tower tragedy will be given thousands in charitable grants.
The hotel chain said three of its properties - in Maidenhead, Brentford and Tottenham - have been investigated during a detailed assessment