Is he ahead?
Only with inbred yokels, religious fundamentalists, white-collar criminals and the KKK. But the US seemingly has an abundance of such people. Or they're just the loudest. It's difficult to tell.
data shows a very close race, to close to 50% to even call any result considering the polls margin of error, but yeah, you have described the typical Trump voter base. Then there are those who may choose based on their economy or what they perceive is best for the country.
If you want to understand Trump's base, those that do not care about anything just look to this thread and see who is says what and the degree of reasoning that goes behind it.