When the Republican and Democratic parties meet at their conventions to officially nominate their candidates for President, they are usually ho hum affairs, heavily scripted, with few surprises.
But not this year says veteran political analyst Jeff Greenfield. With Donald Trump as the presumptive Republican nominee, there is a sense that anything can happen.
As the Republicans start their convention this week, and the Democrats follow, next week, Jeff Greenfield talks to Jesse Mulligan about Trump, Hillary Clinton and the official start to the race for the White House.
