Massachusetts was won by Democrat nominee Barack Obama by a 25.8% margin of victory slightly larger than when John Kerry won his home state with a 25.2% margin. Prior to the election, all 17 news organizations considered this a state Obama would win, or otherwise considered as a safe blue state. No Republican presidential nominee has won a single county in the state nor obtained over 40% of the vote since 1988. In 2008, Democrat Barack Obama captured the state's 12 electoral votes winning 61.80% of the popular vote to Republican John McCain's 35.99%.
Polls indicated that Clinton was leading Barack Obama in the days leading up to the contest in Massachusetts.
Hillary Rodham Clinton won a convincing victory in Massachusetts over Barack Obama due to a number of factors. According to exit polls, 85 percent of voters in the Massachusetts Democratic Primary were Caucasians and they opted for Clinton by a margin of 58-40 percent compared to the 6 percent of African American voters who backed Obama by a margin of 66-29. Hispanics/Latinos, which comprised 5 percent of the total voters, backed Clinton by a margin of 56-36 percent. Clinton narrowly won the youth vote (those ages 18-29) by a margin of 49-48 and tied the vote among voters ages 30-44; she also won all voters over the age of 45 by a margin of 60.5-38. Pertaining to socioeconomic class, Clinton won all levels of family income except highly affluent voters making $200,000 or more a year, as they backed Obama by a narrow margin of 53-47 percent. As for educational attainment levels, Clinton won all categories except those with postgraduate degrees who backed Obama by a margin of 51-47 percent. Among self-identified Democrats in the primary, which made up 65 percent of the total electorate, they went for Clinton by a 58-41 margin while Independents, which comprised a healthy 33 percent of the electorate, also went for Clinton by a 54-42 margin. She also won all ideological groups. Clinton also won most major religious denominations – Protestants 53-46; Roman Catholics 64-33; other Christians 51-47; and other religions 49-46. Obama won Jews by a margin of 52-48 as well as atheists/agnostics by a margin of 53-45.
Clinton performed extremely well statewide, carrying a majority of counties and sweeping most of the major urban areas and cities. Obama won Boston by fewer than 10,000 votes, while Clinton won other urban and conservative towns such as Springfield and Worcester.
Very early on the election polls were tight, but Obama swept all polls taken after March 18. He won each by a double digit margin since August 8. The final 3 polls averaged Obama leading 56% to 36%.
Barack Obama won the state's 12 electoral votes with 61.80% of the vote to John McCain's 35.99%. This is slightly higher than Kerry's victory in 2004. Despite that, four counties in the state trended away from the Democratic party: Bristol, Plymouth, Norfolk, and Worcester.
Technically the voters of Massachusetts cast their ballots for electors: representatives to the Electoral College. Massachusetts is allocated 12 electors because it has 10 congressional districts and 2 senators. All candidates who appear on the ballot or qualify to receive write-in votes must submit a list of 12 electors, who pledge to vote for their candidate and his or her running mate. Whoever wins the majority of votes in the state is awarded all 12 electoral votes. Their chosen electors then vote for President and Vice President. Although electors are pledged to their candidate and running mate, they are not obligated to vote for them. An elector who votes for someone other than his or her candidate is known as a faithless elector.
The electors of each state and the District of Columbia met on December 15, 2008 to cast their votes for President and Vice President. The Electoral College itself never meets as one body. Instead the electors from each state and the District of Columbia met in their respective capitols.
The following were the members of the Electoral College from the state. All 12 were pledged to Obama and Biden: