Far out from 2020, a deep Democratic bench takes shape

Senator Amy Klobuchar has officially joined a crowded field of Democrats vying to challenge President Donald Trump in 2020 - already shaping up to be one of the largest and most diverse ever.

Klobuchar is now party of a group of White House hopefuls that includes other high-flying female US senators, charismatic military veterans and a young gay mayor. And it is likely to grow before the US primary season gets underway a year from now. Here are the first entrants in the presidential race, 21 months before the election.

The 58-year-old granddaughter of an iron miner, Klobuchar is a former prosecutor with an unpretentious demeanor. She has quietly gained attention in Washington as a centrist. Klobuchar is known for putting partisanship aside to pass legislation, something that has earned her a devoted following in Minnesota, and something American voters regularly tell pollsters they want.

Klobuchar has promised more stringent gun laws and set a target of universal health care, while calling for America to support its troops, diplomats and intelligence officers.

But claims about her work ethic have cast a shadow over her goals. Several former aides have been quoted saying she is difficult to work for, with bouts of "explosive rage" leading to exceptionally high staff turnover. Her defenders say she is simply someone who demands excellence, and that the allegations against her would not be made against a man.

Elizabeth Warren
Cory Booker
Kirsten Gillibrand
Kamala Harris
Julian Castro
Tulsi Gabbard
Pete Buttigieg
Andrew Yang
John Delaney
Waiting in the wings