IN THE AFTERMATH of Super Tuesday, we focus this week on America’s presidential election.  With just six states likely to be competitive in November, any one of a dozen things could tip the vote in favour of Joe Biden or Donald Trump. There are the issues: the economy, the border, abortion. There are the turnout and persuasion operations, the donors and the volunteers. And there are also three other big areas of uncertainty: the role of third parties, Mr Trump’s trials and the candidates’ age.

Leader: Three big risks that might tip America’s presidential election
Briefing: Third-party candidates could tip America’s presidential election either way
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