The Democratic race in Pennsylvania -- likely a must-win for Hillary Clinton and a chance for Barack Obama to land a knockout punch -- is tightening.
A new Zogby poll out today is the latest major survey this week to show Obama within single digits of Clinton, as his TV ad barrage and appearances in the state works on voters before the April 22 primary.
Clinton leads Obama 47 percent to 43 percent, just barely outside the margin of error, Zogby says. She is doing well in western Pennsylvania, around Pittsburgh, and in the central part of the state. Obama is doing well in eastern Pennsylvania, near Philadelphia.
As in other states, Clinton is getting more support from older voters. Zogby says the cut-off seems to be about age 35 -- those younger are likely to support Obama.
The survey was conducted Wednesday and Thursday and has a sampling error of plus or minus 3.2 percentage points.
About Political Intelligence
Glen Johnson is Politics Editor at boston.com and lead blogger for "Political Intelligence." He moved to Massachusetts in the fourth grade, and has covered local, state, and national politics for over 25 years. E-mail him at firstname.lastname@example.org. Follow him on Twitter @globeglen.