|While the state, and counties, don't break down the vote by congressional district, Boston.com broke down election night results by city and town.
The good news is that Boston.com was missing only about 30k votes. I went to websites for the 100 biggest cities and towns. Some had data and others didn't and I was able to add in about 14k votes. So I've accounted for 99.5% of all votes here.
Next all I had to do was allocate cities and towns by congressional district. Fortunately, Wikipedia has that info. There wee 9 cities/towns that split precincts. The largest of them, Boston, had the vote broken down by ward and precinct. So it was easy to allocate. Romney got killed in Boston. No surprise. There was a precinct where he best Jill Stein 45-40. Rough.
Most of the remaining 8 cities and towns were small and my estimation of the vote breakdown probably doesn't change much. The two most significant were Cambridge, which was divided between two very Democratic districts, and Fall River. It's unlikely my Fall River allocation changes things that much.
So while these numbers may not be 100% accurate they likely vary by no more than 0.1%-0.2% for each candidate.
MA-1 - Obama 64.1%-34.1%
The district is nearly identical to 2008 and goes from D+12 to D+13.
MA-2 - Obama 58.7%-39.2%
District still D+8. Romney lost Worcester county outside the city by 97,022-95,441, but places like Worcester, Northampton, and Amherst killed him.
MA-3 - Obama 57.0%-41.4%
District still D+6. Scott Brown probably came close to winning here and Mitt did reasonably well in parts. The frustrating thing about Mass is that most of the districts are just Democratic enough to give the GOP no shot.
MA-4 - Obama 57.6%-41.0%
Went from D+8 to D+7. Newton and Brookline kill it for Republicans. My mother was born in Brookline. No telling what I'd believe if she didn't leave.
MA-5 - Obama 64.8%-33.5%
Still D+14. Not competitive if Markey goes to the senate.
MA-6 - Obama 54.6%-44.1%
Goes from D+4 to D+3. Scott Brown probably won the district with a few votes to spare. You'd like to think a Republican can win here, but if Tisei couldn't win in 2012...
MA-7 - Obama 82.6%-15.5%
Goes from D+29 to D+32. As with many minority heavy districts, it gets more Obama.
MA-8 - Obama 58.6%-40.0%
Goes from D+5 to D+8. It was D+12 with Kerry, but moved the other way.
MA-9 - Obama 55.3%-43.4%
Goes from D+5 to D+4. I would've liked to have seen Romney do better here. Most of the Obama margin comes from Fall River and New Bedford. Romney did win the Plymouth County portion of the district, but disappointingly lost Barnstable county.