Full Coverage
Thune urges Sinema to caucus with GOP to avoid three-way reelection race
By Alexander Bolton
Arizona Democrat Ruben Gallego announces Senate bid in challenge to Kyrsten Sinema
By Kyung Lah & Kate Sullivan
Arizona Senate hopeful Ruben Gallego posts record-breaking fundraising haul in bid for Kyrsten Sinema's seat
By Kevin Breuninger & Christina Wilkie
Gallego officially launches bid for Sinema's seat
By Kelly Hooper
Democrat Ruben Gallego to run for Kyrsten Sinema's Senate seat
By Sahil Kapur & Vaughn Hillyard
Democrat Ruben Gallego announces challenge to Kyrsten Sinema for Senate seat in Arizona
By Fin Gomez & Ed O'Keefe
Representative Ruben Gallego Running for Kyrsten Sinema’s Senate Seat
By Katie Glueck & Jazmine Ulloa