Hillary vs. Trump is where Catholics and Evangelicals part ways.
Catholic support of Hillary is at about 46% -- reflective of the overall US population. Meanwhile, only 19% of evangelicals support Hillary.
http://www.christianitytoday.com/gleanings/2016/october/trump-ends-evangelicals-catholics-together-voting-clinton.html
More than a quarter of American Catholics are first-generation immigrants, and 42 percent are people of color, according to a recent survey by the Pew Research Center. These demographics impact church politics as a whole; even white Catholics are up to twice as likely to support Clinton as white evangelicals.
“Trump is also seeing erosion among white Catholics in comparison with previous GOP candidates,” said Stephen F. Schneck, director for the Institute for Policy Research & Catholic Studies at Catholic University. “That reflects rising education levels among white Catholics, and also reflects a reaction to the negative tone of Trump's remarks about immigration, race, and so on. Many of those criticized by Trump are whites’ fellow parishioners in the pews.”
Clinton secured support from 46 percent of white Catholics compared to 19 percent of white evangelicals in a Pew survey over the summer. More recent polls from Gallup and Public Religion Research Institute continue to show white Catholics as less likely than white evangelicals to support Trump and more likely to support Clinton by margins of 10 to 20 percentage points.
http://nymag.com/daily/intelligencer/2016/10/trumps-blunderful-approach-to-wooing-catholics.html
One of the pivotal demographic groups Donald Trump is struggling with is Catholics, who often closely represent American public opinion as a whole (Obama won them by 2 points in 2012). You might guess Trump’s “Catholic problem” is largely the result of his manifest unpopularity among Latinos, the fastest-growing category of U.S. Catholics. But no: A recent poll from the Public Religion Research Institute showed him running behind Hillary Clinton among white Catholics, a pretty reliable GOP-leaning group for many years.