https://www.nationalreview.com/2019/03/trump-primary-challenge-2020-trouble-republican-party/
Does anyone really believe that Weld, Hogan, or Kasich is going to define the future of the post-Trump Republican party?
The race for 2020 is taking shape, although there are still significant unknowns, including whether Donald Trump will get a serious primary challenge.
His fiercest Republican critics say, “Yes — please, please, yes.”
They are probably wrong, and it’s certainly nothing to root for.
Trump’s dominance of the party begins with his lockdown support of the right, forcing any primary challenger to the left. This isn’t fertile territory. Self-identified moderates and liberals are only a fraction of the party, and it is grass-roots conservative activists who have fueled the most potent Republican primary challenges (Ronald Reagan in 1976, Pat Buchanan in 1992).
Because a primary challenge would naturally come from the left and is unlikely to succeed, it will tend to attract people who don’t have a future in GOP national politics and lack conservative bona fides — the wayward former Massachusetts governor Bill Weld; the centrist governor of Maryland Larry Hogan; the former Ohio governor John Kasich, who convincingly demonstrated his lack of national electoral appeal in 2016.