Analyst: When Johnson attacked his opponent by quoting her out of context, his campaign defended this attack by claiming that the quote was even more politically damaging to her in context.
Conclusion
The people who run Johnson's campaign clearly don't believe that . (i.e. the people running Johnson's campaign think that quoting his opponent out of context is equally or more damaging)
Evidence
They continue to quote her out of context, even though they've had plenty of chances to say the quote in its proper context.
Evaluate / Goal
The argument is essentially,
if they keep quoting they don't think the opponent out → "in context" is more of context politically damaging
We need some answer that helps take us from "they keep using out of context" to .