Centrist Democrat Kyrsten Sinema flips Arizona Senate seat

In a year of liberal challenges to President Donald Trump, an avowed centrist scored the Democratic Party's biggest coup -- flipping a red state's U.S. Senate seat.Rep. Kyrsten Sinema won the Arizona Senate seat being vacated by Republican Jeff Flake to become the first woman to win a U.S. Senate seat in the state. The race against Republican Rep. Martha McSally was tight enough that a winner wasn't decided until Monday, after a slow count of mail-in ballots gave her an insurmountable lead.Sinem