Sarah Palin.
Shades indicate margins, pale under 5%, medium between 5% and 9.9%, and dark over 10%. Her mangling of the English language offends anyone not a native speaker of English, which explains how she loses Texas despite ties to the energy industry (the difference between North Dakota and South Dakota). New Mexico rivals Vermont as the 'worst' state other than Hawaii for her.
Mike Huckabee.
He gets a result in popular vote similar to that of John McCain in 2008. He's more polarizing along regional lines. He does pick off North Carolina but can't grab Indiana. As a right-wing populist he wins some states by 30% in the South and wins states that just never vote for a Democratic nominee. That just isn't enough.