BostonGlobe.com Political Headlines - July 12, 2012

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

• Mitt Romney stayed at Bain 3 years longer than he stated: Romney has asserted he left the firm in 1999, but records show Bain listed him on government filings as the man in charge through 2002. Political correspondent Callum Borchers and Washington bureau chief Christopher Rowland report.

• Massachusetts ballot to include marijuana, end-of-life questions: Voters this fall will be asked whether to allow terminally ill patients to end their lives, and to legalize marijuana for medicinal purposes. Correspondent Adam Sege explains. 

• Brown raises his most in a quarter: Senator Scott Brown raised about $5 million between April and June. Democratic rival Elizabeth Warren collected $8.67 million. Political reporters Noah Bierman and Michael Levenson report.

Romney booed at NAACP convention: The polite reception Romney initially received turned to sustained boos when he said he would repeal Obama's health reform law that the Supreme Court recently upheld. Political reporter Tracy Jan details writes.