Conservative pundits have a remarkable amount of free speech. They favor corporations and big profits over environmental and human needs, see nothing wrong with amassing great wealth while many live in poverty, blame the poor for the poverty that has been imposed upon them, see regulations against business as a bureaucratic sin, and worship at the altar of the free market. They support repressive U.S. interventions abroad and pursue policies opposed to class, gender, and racial equality. Such rightists as Rush Limbaugh, William F. Buckley Jr., John McLaughlin, George Will, and Robert Novak enjoy much more exposure to mass audiences than left liberals and populists like Jim Hightower, Jerry Brown, or Ralph Nader. It is the economic power of the rich corporate media owners and advertisers that provides right-wingers with so many mass outlets, not the latter's wit and wisdom.
Availability is the first and necessary condition of consumption.
Hence, those who align themselves with the interests of corporate America will have more freedom of expression than those who remain steadfastly critical. Leftists are sometimes allowed to teach in universities but they usually run into difficulties regarding what they say and write and they risk being purged from faculty positions. Likewise, they are free to work for labor unions but they generally have to keep their politics carefully under wraps, especially communists. People on the Left can even speak publicly but usually to audiences that seldom number more than a few hundred. And they are free to write for progressive publications, which lack the promotional funds to reach mass readerships, publications that are perennially teetering on the edge of insolvency for want of rich patrons and corporate advertisers.