We investigate the difference in the spread of COVID-19 between the states <*> and the states
we first use a K - means clustering method
We investigate the difference in the spread of COVID-19 between the states won by Donald Trump ( Red ) and the states won by Hillary Clinton ( Blue ) in the 2016 presidential election , by mining transportation patterns of US residents from March 2020 to July 2020 .
To ensure a fair comparison , we first use a K - means clustering method to group the 50 states into five clusters according to their population , area and population density .