Maybe based on the condensed paraphrased headline. What he actually said was:

"There’s a classic parlor game of trying to find a little bit of daylight between running mates and if people want to play that game we could look into why an evangelical Christian like Mike Pence wants to be on a ticket with a president caught with a porn star "

To me that's pretty clearly saying that being "caught with a porn star" is bad, and Mike Pence is a hypocrite if he supports that while claiming to be a good Christian.