Hillary Clinton and Donald Trump are two of the most polarizing presidential candidates in modern history. FRONTLINE's acclaimed election-year series, "The Choice," returns - going behind the headlines to investigate what has shaped these two candidates, where they came from, how they lead and why they want one of the most difficult jobs imaginable.

Ex­am­ines the key mo­ments that shaped Pres­i­dent-elect Don­ald Trump through in­ter­views with ad­vi­sors, busi­ness as­so­ci­ates and bi­og­ra­phers. These sto­ries re­veal how Trump trans­formed him­self from a real es­tate de­vel­oper to en­ter­tainer to the next pres­i­dent of the United States of Amer­ica.