US midterm elections: 10 under-the-radar races worth watching

Though Democrats have a strong edge heading into the midterms, some races have openings for Republicans

While marquee races from Maine to Michigan get all the attention, and draw in a ton of money, a significant batch of lower-profile contests across the US could result in upsets.

Democrats have a strong edge heading into November's US midterm elections, polls show. In recent days, election prognosticators have shifted even more races in favor of Democrats.