Barack Hussein Obama II (ⁱ/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/; born August 4, 1961) is the 44th and current President of the United States. He is the first African American to hold the office. In January 2005, Obama was sworn in as a U.S. Senator in the state of Illinois. He would hold this office until November 2008, when he resigned following his victory in the 2008 presidential election.

Born in Honolulu, Hawaii, Obama is a graduate of Columbia University and Harvard Law School, where he was the president of the Harvard Law Review. He was a community organizer in Chicago before earning his law degree. He worked as a civil rights attorney in Chicago and taught constitutional law at the University of Chicago Law School from 1992 to 2004. He served three terms representing the 13th District in the Illinois Senate from 1997 to 2004.

Following an unsuccessful bid against the Democratic incumbent for a seat in the United States House of Representatives in 2000, Obama ran for the United States Senate in 2004. Several events brought him to national attention during the campaign, including his victory in the March 2004 Illinois Democratic primary for the Senate election and his keynote address at the Democratic National Convention in July 2004. He won election to the U.S. Senate in Illinois in November 2004. His presidential campaign began in February 2007, and after a close campaign in the 2008 Democratic Party presidential primaries against Hillary Rodham Clinton, he won his party's nomination. In the 2008 presidential election, he defeated Republican nominee John McCain, and was inaugurated as president on January 20, 2009. Nine months later, Obama was named the 2009 Nobel Peace Prize laureate. In April 2011, he announced that he would be running for re-election in 2012.

Willard Mitt Romney (born March 12, 1947) is an American businessman and the presumptive nominee of the Republican Party for President of the United States in the 2012 election. He was the 70th Governor of Massachusetts (2003–07).

The son of Lenore and George W. Romney (Governor of Michigan, 1963–69), he was raised in Bloomfield Hills, Michigan. In 1966, after one year at Stanford University, he left the United States to spend thirty months in France as a Mormon missionary. In 1969, he married Ann Davies, and the couple had five children together. In 1971, he earned a Bachelor of Arts degree in English from Brigham Young University and, in 1975, a joint Juris Doctor and Master of Business Administration from Harvard University as a Baker Scholar. He entered the management consulting industry, which in 1977, led to a position at Bain & Company. Later serving as Chief Executive Officer, he helped bring the company out of financial crisis. In 1984, he co-founded the spin-off Bain Capital, a private equity investment firm that became highly profitable and one of the largest such firms in the nation. His net worth is estimated at $190–250 million, wealth that has helped fund his political campaigns. Active in The Church of Jesus Christ of Latter-day Saints, he served as Ward Bishop and later Stake President in his area near Boston. He ran as the Republican candidate in the 1994 U.S. Senate election in Massachusetts, losing to long-time incumbent Ted Kennedy. In 1999, he was hired as President and CEO of the Salt Lake Organizing Committee for the 2002 Winter Olympics and Paralympics; and he helped turn the fiscally troubled games into a success.

Carly Rae Jepsen (born November 21, 1985) is a Canadian recording artist and singer-songwriter from Mission, British Columbia. In 2007, she placed third in the fifth season of Canadian Idol, and was a part of the Canadian Idol Top 3 concert tour.

Shortly after competing on Idol, she signed to Fontana and MapleMusic, and released her debut album, Tug of War, on September 30, 2008. Three years later, she released a new single, entitled "Call Me Maybe", which was released by 604 Records, and was followed by the release of her debut extended play, Curiosity, on February 14, 2012. "Call Me Maybe" was met with much success, reaching the Top 5 on the Billboard Hot 100 and reaching the number 1 spot on the Canadian Hot 100. The single also went to number 1 in Australia, Ireland and the United Kingdom. Jepsen signed with Interscope Records in 2012.

Jepsen attended Heritage Park Secondary School in Mission, British Columbia and has since performed there post-graduation. She later attended the Canadian College of Performing Arts in Victoria, BC before auditioning for Canadian Idol. After completing the Canadian Idol tour, Jepsen retreated to B.C. to focus on writing, recording and completing her band. Her demos attracted attention and she was eventually signed a joint management deal with Simkin Artist Management and Dexter Entertainment. A deal with Fontana/Maple Music quickly followed, leading Jepsen into the studio with producer/writer Ryan Stewart.

Osama bin Mohammed bin Awad bin Laden ( /oʊˈsɑːmə bɪn moʊˈhɑːmɨd bɪn əˈwɑːd bɪn ˈlɑːdən/; Arabic: أسامة بن محمد بن عوض بن لادن‎, ʾUsāmah bin Muḥammad bin ʿAwaḍ bin Lādin; March 10, 1957 – May 2, 2011), was the founder of Al-Qaeda, the jihadist organization responsible for the September 11 attacks on the United States and numerous other mass-casualty attacks against civilian and military targets. He was a member of the wealthy Saudi bin Laden family, and an ethnic Yemeni Kindite.

Bin Laden was on the American Federal Bureau of Investigation's (FBI) lists of Ten Most Wanted Fugitives and Most Wanted Terrorists for his involvement in the 1998 U.S. embassy bombings. From 2001 to 2011, bin Laden was a major target of the War on Terror, with a US$25 million bounty by the Federal Bureau of Investigation. On May 2, 2011, bin Laden was shot and killed inside a private residential compound in Abbottabad, Pakistan, by U.S. Navy SEALs and CIA operatives in a covert operation ordered by United States President Barack Obama.

Stefani Joanne Angelina Germanotta (/ˈstɛfəniː dʒʌrməˈnɑːtə/ STE-fə-nee jurr-mə-NAH-tə; born March 28, 1986), known by her stage name Lady Gaga, is an American singer and songwriter. Born and raised in New York City, she primarily studied at the Convent of the Sacred Heart and briefly attended New York University's Tisch School of the Arts before withdrawing to focus on her musical career. She began performing in the rock music scene of Manhattan's Lower East Side, and was signed with Streamline Records by the end of 2007. During her employment as a songwriter for the record company, her vocal abilities captured the attention of recording artist Akon, who signed her to his label Kon Live Distribution.

Lady Gaga came to prominence as a recording artist following the release of her debut album The Fame (2008), which was a critical and commercial success that topped charts around the world and included the international number-one singles "Just Dance" and "Poker Face". After embarking on the The Fame Ball Tour, she followed the album with The Fame Monster (2009), which spawned the worldwide hit singles "Bad Romance", "Telephone" and "Alejandro". The album's success allowed her to embark on the eighteen-month long Monster Ball Tour, which later became one of the highest-grossing concert tours of all time. Her most recent album Born This Way (2011) topped the charts of most major markets and generated more international chart-topping singles, including "Born This Way", "Judas" and "The Edge of Glory". Besides her musical career, she involves herself with humanitarian causes and LGBT activism.