US democratic senator Mark Kelly at a press conference with some Arizona Republican leaders outside the state capitol building in Phoenix, Arizona on November 7th. Photograph: Ilana Panich-Linsman/The New York Times Democrat Mark Kelly has won re-election in Arizona, defeating his far-right challenger Blake Masters in a critical race that puts the Democrats one victory away from securing control of the US Senate. The Arizona race is one of a handful of contests that Republicans targeted in their bid to take control of the 50-50 Senate. It was a test of the inroads that Kelly and other Democrats have made...