BostonGlobe.com Political Headlines - February 16, 2012

TOP POLITICAL HEADLINES FROM BOSTONGLOBE.COM - Interviews Available

Here are the top POLITICAL headlines from BostonGlobe.com today: 

• Santorum a threat to Romney in Mich.: Political reporter Matt Viser writes about the fight between Mitt Romney and Rick Santorum and what it would mean if Santorum wins the state of Michigan, Romney's home state. 

• Vice President Joe Biden will be visiting Massachusetts, New Hampshire, and Rhode Island next Thursday:

  Political correspondent Shira Schoenberg writes about

  Vice President Joe Biden's upcoming visits to Massachusetts, New Hampshire, and Rhode Island to fundraise and campaign for President Obama. 

• New Democratic super PAC uses ad to poke fun at Mitt Romney: Political correspondent Shira Schoenberg writes about the inaccurate ad's trying to attack Republican candidate Mitt Romney.