From January 3 to June 3, 2008, voters of the Republican Party chose their nominee for president in the 2008 United States presidential election. Senator John McCain of Arizona was selected as the nominee through a series of primary elections and caucuses culminating in the 2008 Republican National Convention held from Monday, September 1, through Thursday, September 4, 2008, in Saint Paul, Minnesota. President George W. Bush was ineligible to be elected to a third term due to the term limits established by the 22nd Amendment.
The 2008 United States presidential election in Iowa took place on November 4, 2008, as part of the 2008 United States presidential election. Voters chose seven representatives, or electors to the Electoral College, who voted for president and vice president.
The 2008 Wyoming Republican presidential caucuses took place on January 5, 2008, with 12 national delegates chosen by county convention delegates. A majority of the national delegates were won by former Massachusetts Governor Mitt Romney. In addition, two national delegates were elected at the Republican State Convention on May 30–31.
The Nevada presidential caucuses are an electoral event in which citizens met in precinct caucuses to elect delegates to the corresponding county conventions. In 2021, Harry Reid passed legislation (AB321) to include primaries in hopes of increasing voter turn-out. Nevada has for decades and still does have a caucus. The caucus is where the delegates receive the votes that will be carried to the National Convention and not the primaries. There are 17 counties in Nevada and the state has 26 delegates. The Nevada caucuses began in 1981. The Kerry/Dean caucus was held on February 14, 2004. In 2008 the DNC gave Nevada the official first in the west status reflecting the growing importance of the West as well as Nevada's electoral bellwether status. The 2008 Nevada caucuses were the third major electoral event in the nominating process for President of the United States. In 2016, the Democratic caucus was held on February 20 and the Republican caucus was held on February 23.
Voters of the Republican Party elected state delegations to the 2012 Republican National Convention in presidential primaries. The national convention then selected its nominee to run for President of the United States in the 2012 presidential election. There were 2,286 delegates chosen, and a candidate needed to accumulate 1,144 delegate votes at the convention to win the nomination. The caucuses allocated delegates to the respective state delegations to the national convention, but the actual election of the delegates were, many times, at a later date. Delegates were elected in different ways that vary from state to state. They could be elected at local conventions, selected from slates submitted by the candidates, selected at committee meetings, or elected directly at the caucuses and primaries.
The 2012 United States presidential election in Nevada took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. State voters chose six electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Maine took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Maine voters chose four electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. Obama and Biden carried Maine with 56.27% of the popular vote to Romney's and Ryan's 40.98%, thus winning the state's four electoral votes.
The 2012 United States presidential election in Minnesota took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. State voters chose ten electors to represent them in the Electoral College via a popular vote pitting incumbent DFL President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Michigan took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Voters chose 16 electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Washington took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Washington voters chose 12 electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Louisiana took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Louisiana voters chose eight electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Missouri took place on November 6, 2012, as part of the 2012 United States presidential election, in which all 50 states plus the District of Columbia participated. Missouri voters chose 10 electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in Idaho took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Idaho voters chose four electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. Prior to the election, 17 news organizations considered this a state Romney would win, or otherwise considered as a safe red state. Romney and Ryan carried Idaho with 64.09% of the popular vote to Obama's and Biden's 32.40%, thus winning the state's four electoral votes. Romney's victory in Idaho made it his fourth strongest state in the 2012 election after Utah, Wyoming and Oklahoma. He improved on McCain's performance in 2008, expanding his margin from 25.3% to 31.69% and flipping Teton County which had previously voted for Obama.
The 2012 United States presidential election in Ohio took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Ohio voters chose 18 electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. This election continued Ohio's bellwether streak, as the state voted for the winner of the presidency in every election from 1964 to 2016.
The 2012 United States presidential election in Oklahoma took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Voters chose seven electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. For the third election in a row since 2004, no third parties were allowed on the ballot.
The 2012 United States presidential election in the District of Columbia took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states and the District of Columbia participated. D.C. voters chose three electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. Prior to the election, Washington DC was considered to be a definite win for Obama; the nation's capital is heavily Democratic and has always voted for Democratic nominees for president by overwhelming margins.
The 2012 United States presidential election in Alaska took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. Alaska voters chose three electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 United States presidential election in North Dakota took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. North Dakota voters chose three electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan.
The 2012 Washington Republican presidential caucuses were held on March 3, 2012. Since 1992, the Washington Republicans have used a presidential preferential primary in addition to the caucuses. The 2012 primary was, however, canceled for budgetary reasons, as was the one in 2004.
The 2016 Wyoming Democratic presidential caucuses were held on April 9 in the U.S. state of Wyoming, representing the first tier of the Wyoming Democratic Party's nomination contest for the 2016 presidential election. Only registered Democrats were allowed to participate in the closed precinct caucuses.
2012 U.S. presidential election 
