Exit polls showed 60% of white Catholics voted for Trump.
Data collection for the ANES 2016 Time Series Study began in early September and continued into January, 2017. Pre-election interviews were conducted with study respondents during the two months prior to the 2016 elections and were followed by post-election reinterviewing beginning November 9, 2016. That is, during this period as an aggregate, Clinton was ahead in almost all the polls regardless of the religion of those surveyed.