Donald J. Trump, 72, is the 45th and current president of the United States. He is running on an "America First" platform that focuses on cutting taxes, restricting immigration, renegotiating or canceling international deals on trade, arms control and climate change, and withdrawing American troops from overseas. Trump was previously a real estate developer and TV personality.

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Amy Klobuchar, 58, is a U.S. senator from Minnesota who has championed legislation to combat the opioid crisis and address the cost of prescription drugs. She told a crowd of 225 in Dubuque March 16 that she would make infrastructure a top priority. She also supports automatic voter registration, reducing money in politics, and reinstating climate regulations.

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Andrew Yang, 44, is a former tech executive who proposes establishing a "universal basic income" of $1,000 per month for all adult Americans. Yang founded Venture for America, a nonprofit organization that trains young professionals to work for startup companies. He also worked for a healthcare startup, founded an education company and worked as an attorney.

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Bernie Sanders, 77, is an independent member of the U.S. Senate from Vermont who caucuses with the Democrats. He supports Medicare for all, the Green New Deal, a $15 minimum wage, limiting the size of banks, and tuition-free college. His tenure in the U.S. Senate and U.S. House make him the longest serving independent member of Congress in American history.

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Bill Weld, 73, ran for vice president as a Libertarian in 2016 and has been critical of Donald Trump. Governor of Massachusetts from 1991 to 1997, and a former federal prosecutor at the Department of Justice's criminal division, Weld focuses his campaign on fiscal restraint, free trade and immigration reform. He has also endorsed steps to legalize marijuana nationwide.

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Cory Booker, 49, is a Democratic member of the U.S. Senate from New Jersey. He announced on Feb. 1 that he was running for president. Booker's early campaign messaging has focused on unity and finding commonality by addressing inequality and racial discrimination. Prior to serving in the U.S. Senate, Booker was the mayor and a city councilman of Newark, N.J.

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Deval Patrick, 63, is a former governor of Massachusetts, first elected in 2007 as the first black governor in the state and the second in U.S. history. He was re-elected to a second term in 2015. Patrick is a late entrant to the 2020 presidential race, announcing on Nov. 14. Patrick has said his campaign will focus on bringing people together and "healing" the country.

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Elizabeth Warren, 69, is a Democratic U.S. senator from Massachusetts. At a March event in Dubuque she outlined a wealth tax that she proposes on the nation’s ultra-rich. Warren has focused her campaign on economic issues, including a new tax on the richest 75,000 families to partially fund universal childcare, student loan debt relief, the Green New Deal and Medicare for all.

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Joe Biden, 76, served nearly seven terms as a U.S. senator from Delaware before becoming vice president in the Barack Obama administration from 2009 to 2017. Biden has run for president twice before. He is known for his homespun personality and ability to connect with the working class. He campaigns on foreign policy and protecting low-income workers.

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Joe Walsh, 57, is a former Republican member of the U.S. House of Representatives from Illinois and a conservative radio talk show host. A Tea Party member, Walsh initially supported Donald Trump, but has recently been at odds with the president on policies, including the 2017 omnibus spending bill, Chinese tariffs, and use of executive power.

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Former U.S. Rep. John Delaney from Maryland opened his Dubuque office on March 31.  The 55-year-old was the first Democrat to formally declare his candidacy in July 2017. Delaney's campaign motto is "Focus on the Future," and he is running to address issues related to globalization, automation and technology. He also emphasizes cooperation and bipartisanship.

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Julián Castro served as the U.S. secretary of housing and urban development during the Obama administration. He also served as mayor of San Antonio for five years. The Democratic candidate for president announced he was running on Jan. 12. His campaign has emphasized a platform of universal prekindergarten, "Medicare for all" and immigration reform.

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Marianne Williamson, 66, is a self-help author and lecturer who made an unsuccessful bid for Congress as an independent in 2014. She supports Medicare for all, the Green New Deal, and $100 billion in reparations for slavery, distributed annually over 10 years for economic and education projects. She founded a charity that helps people with serious illnesses.

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Michael Bennet, 54, is a Democratic member of the U.S. Senate from the state of Colorado. A moderate, Bennet is known for bipartisanship. Bennet was appointed to the Senate in 2009 and won a full term in 2010. He was re-elected in 2016 when he beat Republican Darryl Glenn. Bennet is also a former superintendent for Denver Public Schools.

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Michael Bloomberg, 77, is a former three-term Republican mayor of New York City, investment banker, and media executive. He re-registered as a Democrat in October and has filed for several state Democratic primaries, including Alabama, Arkansas, and Texas. Although he favors gun control and climate action, his views on taxes are more conservative.

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Pete Buttigieg, 37, is the mayor of South Bend, Ind. He joined the presidential race on Jan. 23. Buttigieg is in his eighth year as mayor. He was first elected in 2011 at age 29, and re-elected in 2015 with 80 percent of the vote. As mayor he focused on job growth in tech industries. He has called for policies on issues like climate change and economic opportunity.

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Tom Steyer, 62, is a billionaire investor, activist and philanthropist known for his marketing campaign advocating for the impeachment of Donald Trump. Steyer has also been an environmental activist. Fighting climate change and promoting renewable energy are among his signature issues in the presidential race. He founded NextGen America in 2017.

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