A new constitution would gut the federal government. You see, all those red fly over states would have to approve it and the citizens of those states are sick and tired of federal over each. In a constitutional convention, the population of the states doesn’t matter, just the number of states, one state, one vote. The handful of liberal, powerful states couldn’t use their population numbers to tilt the playing field like they normally do in D. C..
Beginning with Ronald Reagan the Republican Party has learned to exploit hostility to the government. However, the white working class, which has become a Republican constituency, and the Republican Donor Class, which benefits from the votes of white blue collar workers, are hostile to different parts of the government.
The white working class distrusts the Democrat Party on the issues of race, crime, and immigration, and has reason to. The Civil Rights Act of 1964, and the War on Poverty declared the same year, were followed by a black ghetto riot in Harlem in August of that year. The Voting Rights Act of 1965 was quickly followed by the more destructive Watts Riot. There were more serious riots in 1967, and still more serious riots in 1968.
The Kerner Report of 1968 blamed the riots on white racism. In other words, whites, who were obeying the law, were somehow forcing blacks to break the law.
When it became obvious that giving blacks equal rights would not achieve racial equality in incomes (because most blacks are less intelligent than most whites, but don't tell anyone I said so) Democrats decided to force whites to make sacrifices for blacks. These included forced school bussing and affirmative action. These were mainly forced on white blue collar workers.
So, I have a lot of sympathy for the alienation most lower income whites feel for the Democrat Party. Nevertheless, they are still in favor of domestic programs that obviously help them. These include Social Security, Medicare, unemployment compensation, minimum wage laws, and laws to protect labor unions.
The Republican Donor Class does not need the domestic sector of the economy, and does not like being taxed to fund it.