Not sure how realistic this is, but a well written op Ed from a liberal writer and newspaper.
"There are a few signs of hope for O’Malley. Though Clinton has cruised so far without having to actually answer to the voters, she’s shown signs of weakness. A new Quinnipiac poll showed a There are a few signs of hope for O’Malley. Though Clinton has cruised so far without having to actually answer to the voters, she’s shown signs of weakness. A new Quinnipiac poll showed a stunning 53 percent of voters don’t trust her and more than half of independent voters don’t like her. That’s got to make Democrats nervous"
Battenfeld: How Martin O'Malley can beat Hillary Clinton | Boston Herald
Good fodder for Democrats to kick around. The writer then details what he considers a strategy for O'Malley.