Donald Trump has been a fixture of American culture for decades. As a real estate mogul, Trump has made his mark -- literally -- on cities across the country, branding hotels, casinos, resorts and even airlines with the "Trump" name. His 1987 best-selling book, "The Art of the Deal" helped Trump become a celebrity, a status that was cemented with his reality television series, "The Apprentice."
Trump had flirted with running for president many times and in 2000, he briefly ran for the Reform Party nomination. Few took him seriously in 2015 when he began talking about running for the Republican Party nomination until he actually announced and began seriously campaigning.
In a much-criticized announcement speech, Trump made illegal immigration his top cause, calling Mexicans crossing the southern border into the United States criminals and rapists. Trump's rallies attracted large crowds and the businessman began rising in the polls, eventually rising to the top of the GOP field in early primary states and nationally.
When his rhetoric escalated, so did his poll numbers. Trump has criticized his fellow Republicans, often in personal ways. He has criticized Washington leaders of both parties for being ineffective in halting illegal immigration and making international trade deals and has made a rallying cry of his campaign slogan, "Make America Great Again."
Historic level turnouts have helped Trump solidify a first place lead so far in the primary contest. The billionaire has won 10 states and is expected to win more on his path to the nomination.