I would expect, all else being equal, a smaller deficit to reduce employment, especially in the story term. Although an increase in employment would also shrink the deficit.
Attributing economic fortune and the business cycle to the colours of the leader seems medieval to me. Did only the leader matter? What about the Congress or Senate?
What actual policy and action delivers outcomes?
@pkrugman, I think you may very much like this article:
https://linkso.medium.com/my-country-is-the-greatest-2b527a0002bf