Among other things, CA and Bannon tested out slogans such as "deep state" "drain the swamp" on the Facebook accounts in 2014 to see what would be most effective in motivating voters for Clinton opponents and discouraging Clinton voter from going to the polls. This shows that one should not be limiting a query to when they started working for Trump.
Obviously CA was not infallible, they could only get Ted Cruz to second against Trump among GOP candidates in that initial mad scrum, Cruz thought he could win with only evangelical voters in the primaries based on what they looked at with previous GOP primaries and was blindsided by Trump coming at the primaries from a different angle.
https://www.washingtonpost.com/politics/bannon-oversaw-cambr...
Obviously CA was not infallible, they could only get Ted Cruz to second against Trump among GOP candidates in that initial mad scrum, Cruz thought he could win with only evangelical voters in the primaries based on what they looked at with previous GOP primaries and was blindsided by Trump coming at the primaries from a different angle.