When Trump was nominated as the presidential candidate in 2016, there was a major shift in the Republican party away from classically-liberal small-government party towards a more populist, nativist party. Because of this, may conservatives felt alienated and no longer at home in the GOP. For example in 2016 Mitt Romney gave a long speech on the danger's of Trump's policies:
His tax plan in combination with his refusal to reform entitlements and honestly address spending would balloon the deficit and the national debt. So even though Donald Trump has offered very few specific economic plans, what little he has said is enough to know that he would be very bad for American workers and for American families...
Now let me turn to national security and the safety of our homes and loved ones. Mr. Trump's bombast is already alarming the allies and fueling the enmity of our enemies. Insulting all Muslims will keep many of them from fully engaging with us in the urgent fight against ISIS, and for what purpose?
Arguably this group is shrinking in relevance as more right-leaning Americans sign onto Trump's agenda, but presumably there are still some conservatives dissatisfied with the deficit, expanding executive power, lack of respectful discourse, and focus on stopping immigration coming from the white house. In a recent interview, noted Never-Trump Republican Bill Kristol said that if Trump gets the GOP nomination he "wouldn’t rule out voting for Democrat against Trump at all.”
My question is this, have any Democrats in leadership or candidates for office, embraced any new policies or compromises in an attempt to appeal to conservatives that are unhappy with Trump? For example, a presidential candidate might offer to nominate a supreme court justice with a narrow/textual view of the constitution in order to undermine one of Trump's key appeals among conservative voters.