A recent replication study finds no link between women's fertility and political preferences, but notes a weak connection between psychopathic traits and support for Trump.
Did you read the entire article? Because it also explicitly states:
However, the research did uncover a weak relationship between psychopathic personality traits and support for Donald Trump. […] When examining Dark Triad personality traits, Engelbrecht and her colleagues found that psychopathy showed a significant, albeit weak, relationship with a preference for Trump in the matchups where he was featured. This finding suggests that women with higher levels of subclinical psychopathy, characterized by impulsivity and remorselessness, were slightly more inclined to support Trump, irrespective of the specific electoral matchup.
Did you read the entire article? Because it also explicitly states:
Which is exactly what the headline says.