US election: How left-wing is the Democratic field?

The US Democratic Party is undergoing something of an identity crisis as it debates what direction to take ahead of the looming battle with President Donald Trump, a Republican, in November.

A tension between the so-called progressive wing of the party, led by Bernie Sanders and Elizabeth Warren, and the moderates like Joe Biden, Amy Klobuchar and Pete Buttigieg is dominating the primary elections.

Let's break it down by issues and compare the current field to figures in history and leading politicians from the UK.

When there's a Democratic nominee, we will reprise the format, adding Trump and world leaders.

Taxes
Taxes will always be a hot-button political issue in the US.

Back in 1992, Bill Clinton came into office with a fairly ambitious plan to reverse many of the Ronald Reagan-era tax cuts, but he still enacted a middle-class tax cut as part of his package. Democrats today are more aggressive.