Campaign tech reporting rarely gives readers real examples of what A/B testing is; we just use the term and move on. Likewise, we make it seem like all political ads are meant to persuade swing voters, as opposed to raising money from the base. I tried to demonstrate each of those points to our readers.

Much of the Trump campaign’s most inflammatory online ads are meant to collect the personal info of the dwindling number of Trump’s supporters who aren’t already on his mailing lists — rather than to persuade swing voters — I revealed based on hidden (but extremely revealing) metadata about the purpose of the Trump campaign’s ads, in their own words. (PDF)

We explained A/B testing by tracing Trump’s messaging immediately after he was impeached by the House to see which text and image ended up “winning”.

Along these same lines: