Basically, Millennials (and other generations except Silent Generation, but especially Millennials) are moving more and more to the Democrat side, are eager to vote in the midterm elections, and hate Trump.
Their breakdown:Millennials as those born between 1981 and 1996
Gen X as those born between 1965 and 1980
Baby Boom generation as those born between 1946 and 1965
Silent Generation as those born between 1928 and 1945.