New Hampshire
Hillary Clinton polls well in New Hampshire, where she was victorious in her 2008 presidential bid. She has very strong support among female voters there and the state, with a female governor and women from both parties in the Senate, is expected to throw its support behind her again.
There is plenty of support for the GOP depending on the candidate that secures the nomination. Kentucky Senator Rand Paul is the best contender they have for the state and if he is the Republican Party nominee, then New Hampshire is officially a swing state.
This unlikely to be the case should Wisconsin Governor Scott Walker or Texas Senator Ted Cruz end up on the Republican ticket. Neither is viewed positively in polls there.
News about New Hampshire is provided below or go to an overview of all the 2016 Swing States.