Just as he was correct on the housing collapse.
The reason for his victory was never Russian collusion, it was Trump's ability to make Americans proud about the worst things in America...look at Trump's love of fast food for example. It is real and relatable to most of his uneducated voters. He also uses the age old trick of blaming a minority group for the problems of poor whites. The reason it works is because neo-liberalism left behind a shit ton of poor white folks in rural areas.
Trump obviously isn't making their lives better, but they think he's trying b/c he gives them lip service and speaks at a grade-level they can comprehend. It probably won't be until the tariff-caused recession hits in 2020 that they will realize he never really cared about their interests (since they don't make enough money to benefit from his massive tax cuts). By then, he'll probably be re-elected.