Another Democrat says he's ready to challenge Sen. Scott Brown in 2012: Newton Mayor Setti Warren. Warren joins three other candidates who have declared that they're seeking the Democratic nomination: City Year co-founder Alan Khazei, former Lt. Gov.-nominee Bob Massie and Salem immigration lawyer Marisa De-Franco.
It's too soon to know how the Democratic primary will shake out. But conventional wisdom holds the nominee will face a tough race against Brown. But is that really true? Glen Johnson has been doing some math to try and figure that out.
- Glen Johnson, political editor, Boston.com
- Boston.com: Breaking down the Brown race - by the numbers
This program aired on May 10, 2011.