Pew is one of the most respected polling organizations. See their findings on party affiliation by age and gender. Notice particularly the gap between men and women in party registration grows larger with each younger cohort.
About this data, David Strom of Hot Air draws the following conclusion.
Unsurprisingly, most young men aren't buying what the Democrats are selling, even if young women are. And, both sadly and ironically, the young men are feeling liberated by the move while young women feel more and more oppressed--even complaining about the dating pool. They get unhappier, and the Democrats get more of their votes.
As men move right, they become happier. As women move left, they become unhappier. Young women have rates of depression three times higher than young men, and they are blaming men.
Well of course they do, almost nobody wants to take the blame for their troubles.