To rank CNBC's 2019 America's Top States for Business, we put all 50 states through a rigorous test and graded them based on more than 60 measures of competitiveness in 10 broad categories. Each category is weighted according to how frequently states use them as a selling point in economic development marketing materials. That way, our study ranks the states based on the attributes they use to sell themselves. CNBC's criteria was developed with guidance from a diverse array of business and policy experts and official government sources, along with input from the states themselves. And our metrics are based on publicly available data from a variety of sources. As in years past, some states tied in several categories. Learn more about our categories and methodology here.