republicans in the modern era have tended to have a strong ideological opposition to government interference in the economy. it's not specific, it's general, and it's a core political position.
i'm imagining the liberal party of canada supporting market healthcare or the democrats opposing abortion. they would lose a lot of voters.
i don't have any quantification because trump tried to viciously silent dissent about the topic but it's easier to believe that these actual conservative voters would stay home than that they would all of a sudden embrace government intervention in the economy.