article_snippet.sent: Watch the volume as O'Malley uses YouTube to test Clinton pokes .
article_snippet.sent: Slowly but clearly, former Maryland Gov. Martin O'Malley is intensifying former Maryland Gov. Martin O'Malley criticism of overwhelming Democratic presidential front-runner Hillary Clinton.
article_snippet.sent: How aggressive will former Maryland Gov. Martin O'Malley get?
article_snippet.sent: CNN's Jeff Zeleny says former Maryland Gov. Martin O'Malley enjoys using YouTube videos as a quick way to spread former Maryland Gov. Martin O'Malley opinion -- and question moves by Clinton, like Clinton reversal on the question of whether Clinton supports allowing undocumented workers to obtain driver's licenses.
article_snippet.sent: Every time Clinton sort of adjusts Clinton positioning from '08 to '16 -- Clinton statement on the drivers' licenses that we discussed and other things -- former Maryland Gov. Martin O'Malley has been releasing a YouTube video showing a speech where former Maryland Gov. Martin O'Malley has done something different, so watch for that to continue," said CNN's Jeff Zeleny.
article_snippet.sent: Those YouTube videos on former Maryland Gov. Martin O'Malley channel will be a key part of the race
highlights_snippet.sent: O'Malley using YouTube to test out attack lines .
  