Sources: CNN
Voters in Guam, Washington, D.C. and Wyoming head to the polls to vote in Republican Party caucuses, while Democratic Party members vote in the Northern Mariana Islands caucus. 2016-03-12
Four third-party U.S. presidential election candidates—representing the Libertarian, Green, Constitution, and Justice parties, who were excluded from the high-profile televised encounters between Mitt Romney or Barack Obama—attend their own presidential debate hosted in Chicago by the Free and Equal Elections Foundation, which hopes for a more transparent and open electoral system. Romney (with the Republican Party) and Obama (with the Democratic Party) refuse invitations to attend the debate, televised on international news channels but on no major U.S. network. 2012-10-23
Mitt Romney accepts the nomination of the Republican Party to be its candidate in the 2012 US presidential election. 2012-08-30
Mitt Romney, the presumptive Republican Party nominee for the United States presidency, names Wisconsin Congressman Paul Ryan as the Republican Party's vice presidential candidate in the presidential election in November. 2012-08-11
Voters in the US state of Texas go to the polls for primary elections, with Mitt Romney securing the Republican nomination in the Republican primary. 2012-05-29
In the United States, prospective Republican presidential candidate Mitt Romney condemns same-sex marriage as illegitimate. At the evangelical Christian Liberty University in Lynchburg, Virginia, he describes marriage as exclusively "a relationship between one man and one woman." 2012-05-12
Mitt Romney wins the caucuses in Guam, the Northern Mariana Islands, the Virgin Islands and Wyoming. 2012-03-10
Republican Party voters in Colorado participate in caucuses with 36 delegates at stake - Santorum wins, with Mitt Romney placing second. 2012-02-7
Republican Party voters gather in Nevada for the party caucuses with Mitt Romney projected as the winner. 2012-02-4
The Republican Party wins six gubernatorial elections including Pennsylvania, Michigan, Tennessee, Kansas, Oklahoma and Wyoming. 2010-11-2