Doctors were once overwhelmingly male and usually owned their own practices. They generally favored lower taxes and regularly fought lawyers to restrict patient lawsuits. Ronald Reagan came to national political prominence in part by railing against "socialized medicine" on doctors' behalf. But doctors are changing. They are abandoning their own practices and taking salaried jobs in hospitals, particularly in the North, but increasingly in the South as well. Half of all younger doctors are women, and that share is likely to grow. There are no national surveys that track doctors' political leanings, but as more doctors move from business owner to shift worker, their historic alliance with the Republican Party is weakening from Maine as well as South Dakota, Arizona and Oregon, according to doctors' advocates in those and other states.