quote [ Late last night, 88-year-old former senator Mike Gravel started posting tweets. Or, an account under his name did. The tweets, for the most part, were about Gravel running for president, something he has not done since 2008 (he hasn’t been a senator since 1981). They were clear that any candidacy would exist solely for the purposes of pushing the other Democratic candidates to the left on their handling of foreign policy and the military-industrial complex. ]