The Contenders

Is there a difference between one Democratic candidate and another? Or has the electoral system levelled the field, so that it only comes down to money and powerful friends? For the first time in many years, Presidential candidates are placing issues and identities at the forefront of their campaigns: a black man, a Latino, a woman, a populist from the South, a progressive from Cleveland. But does any of them have what it takes to turn the country around?