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Ted Cruz announced his 2016 presidential campaign on March 23, 2015, running as an outsider and strict conservative while initially avoiding direct attacks on fellow outsider candidate Donald Trump. His strategy paid off when he won the Iowa Caucuses in February 2016, but as the field narrowed, support consolidated behind Trump, who beat him decisively on Super Tuesday and in most subsequent primaries. The once-cordial relationship soured as Trump labeled him "Lyin' Ted," retweeted an insult about Cruz's wife's appearance, and promoted a conspiracy linking Cruz's father to the JFK assassination, prompting Cruz to call Trump "completely amoral." In late April, Cruz announced Carly Fiorina as his running mate, but after losing the pivotal Indiana primary, he suspended his campaign that same night in May 2016. Cruz ultimately won the second-most state contests and delegates in the race, securing his position as Trump's main rival but failing to stop Trump's path to the nomination.