US politics: Split it down the middle

The Democrat debates will see 10 prospective presidential candidates argue why they should receive the nomination to take on Donald Trump. Bette Browne looks at the runners.

US president Donald Trump has a path to re-election and it runs through the Democratic party unless former vice president Joe Biden can tighten his grip on his party’s nomination — that’s the view of some voters in middle America, backed by a number of polls.