Surging turnout, with Democrats voting more: key takeaways from early voting data

People cast ballots during early voting on 23 October in Nashville, Tennessee. Photograph: George Walker IV/AP

With just 11 days until the US midterm elections, early voting data is rolling in nationwide. Democrats need a net gain of four seats to reclaim the majority in each chamber of Congress. Here is where the numbers stand as of Friday:

Turnout is surging in key battleground states