It's been 35 years since Ronald Reagan announced his run for president. He did so just two months before the Iowa caucuses, unlike the protracted campaigning that takes place today. WJZ/AP hide caption itoggle caption WJZ/AP It's All Politics Throwback Thursday: Reagan Announces Run For President April 16, 2015 Imagine a time when presidential candidates declared just two months before Iowa. Flash back to 1979 when Ronald Reagan announced. It's not just timing that's shifted; so has the culture.