The Georgia runoff shows that Democrats have figured out a winning strategy | Andrew Gawthorpe

The midterms have been an endorsement of Biden's formula: appeal to the middle by hammering at Republicans' extremism

For the third time in a row, Democrats have won a Senate election in Georgia. Raphael Warnock's victory makes it clear that the party's gains in the state in 2020 were not an anomaly. Although far from being a so-called blue state, Georgia is positioned well to remain competitive in 2024 and beyond. But in order for that to happen - and to build on their victories elsewhere - Democrats have to make the right choices.

Taken as a whole, the midterms have provided a ringing endorsement of the approach to politics favored by President Joe Biden. From the first moment it looked like he would enter the 2020 Democratic primary, Biden was maligned and mocked for suggesting that the path to a Democratic victory lay through gains with independent and suburban voters. Critics argued that the country was so deeply polarized that swing voters no longer existed, and that appeals for bipartisanship would fall on deaf ears. In their view, the only viable strategy was to mobilize the Democratic base with leftwing appeals, even at the cost of losing voters in the center.