He's quit the Democrats and joined the Libertarian Party.
Gravel says:
the Democratic Party today is no longer the party of FDR. It is a party that continues to sustain war, the military-industrial complex and imperialism -- all of which I find anathema to my views.Sometimes I wonder whether Mike Gravel has studied any contemporary political history. It's been a long time since the Democratic Party was "the party of FDR", and it should come as no surprise that the Democratic party likes "war, the military-industrial complex and imperialism".
...
I look forward to advancing my presidential candidacy within the Libertarian Party, which is considerably closer to my values, my foreign policy views and my domestic views.
I also have trouble reconciling Gravel's anti-militaristic views with the Libertarian Party's (laissez-faire, "free market") economic policy, since in my view the military industrial complex is both the inevitable result of laissez-faire capitalism and the force which precludes the existence of any "free market".
But perhaps this is a good sign; if Mike Gravel is caught in a bind between what he says he believes and actual verifiable reality, then perhaps the other candidates will begin to see that he has something in common with all of them.