It is important to look at it to get a sense of how strong of a mandate the party in power should claim. Given the current statistics, it's clear Trump's mandat

It is important to look at it to get a sense of how strong of a mandate the party in power should claim. Given the current statistics, it's clear Trump's mandate is particularly weak; if he oversteps his bounds, it's likely to bite him hard in his 2020 reelection bid.