Jon Lieber, Managing Director of the United States for the Eurasia Group, shares his insights on the biggest development in US politics this week:

So, the scriptwriters for 2020 have thrown as a real curveball, introducing the most explosive element in US politics, just six weeks before the election. The tragic death of Ruth Bader Ginsburg, who will be remembered as a trailblazing jurist, but also a reliably liberal vote on a court that was divided along ideological lines with a five-four conservative majority. This has the potential to upend the presidential election. And likely will motivate turnout on both sides. But also, importantly for president, Trump could remind some Romney voting ex-Republicans who were leaning towards Biden why they were Republicans in the first place. Which means that it has the potential to push some persuadable voters back towards the president.