Trevor Loudon has done the yeoman's work in identifying the connection between the radical Left and Obama. Building on this work, the book documentation of the socialist connection has been made by Stanley Kurtz.
In June 2008 the socialist Kurt Stand wrote an essay in prison entitled “Supporting Barack Obama: A Prison-Eye View of the Presidential Campaign“:
As to Obama, I vacillated, knowing of his past activism, but not seeing enough in his Senate record or campaign approach to sufficiently differentiate himself from Edwards or Clinton…
To go back to Obama, nobody knows what he will do, but if he is able to overcome our country’s racism and actually win election we can expect some initial efforts to rein in the excesses of the Bush Administration, some measures to ameliorate the worst conditions which people are experiencing in terms of rights, in terms of insecurity…
It will be up to those who want genuine social justice to build movements that give him the possibility of pushing further; finding out then whether he will or won’t remembering that the key will not be him but us (us defined as those who worked for his election, for social justice activists, the left) and what we do, how we organize. How we use the social solidarity the campaign is developing as the basis of a renewed social solidarity. Will that be enough—no, the structural roots of the wars in Iraq/Afghanistan, of neo-liberal economics, of the authoritarian aspects of our political culture won’t go gently in the night. Only, however, by working in good faith with attempts to improve what is, is it even possible to imagine the building of the necessary, broad-based, independent, radical formations able to press for deeper changes.
In sum, radicals and progressives ought to join those—including those in prison—who have already decided to back Obama, see where the campaign can take us, see what can then be accomplished.