I have stated elsewhere that, in my opinion, we need to focus our attacks on Trump in ways that best ensure we win back some Trump voters, if we Democrats are to start winning important elections again.
I have also stated that, for me, the best three attack metrics are:
1) Did Trump create a job for anyone you know?
2) Did your health insurance premium go down – as Trump promised it would?
3) Has your cost of living or doing business increased as a result of Trump’s programs (e.g. tariffs on Chinese imports; the border wall with Mexico)?
The attached article seems to offer an excellent starting point for fact-checking (1).