I have met Jamie Galbraith and have read virtually everything written by J Kenneth Galbraith.  JKG was guy who introduced me to Veblen and was responsible for starting the historic preservation effort on the Veblen homestead.

Now you may consider these men lefties, but the truth is that JKG was one of the founders of Americans for Democratic Action--a group who sponsored a movement dedicated to combating the extremism of the American Marxists.  He wrote for Fortune Magazine and was personally hired by Luce himself.  He taught at Harvard for most of his career.

Now in the USA of final days W, such folks could be considered leftists.  But by ANY reasonable definition, they are relentless centrists.

"Remember the I35W bridge--who needs terrorists when there are Republicans"