Kari Lake officially announces Senate bid in Arizona

Former baseball star Steve Garvey enters Senate race in California

Political forces begin to move on new California Sen. Butler as she mulls a run

Kari Lake files paperwork to run for Senate in Arizona

Laphonza Butler sworn in as California's newest senator

Schumer announces U.S. Senate trip to China, Japan, South Korea

Laphonza Butler of EMILY's List to replace Dianne Feinstein as senator

Controversial military aid for Egypt held by new Senate Foreign Relations Committee chairman

The complicated senate race to replace Diane Feinstein

Analysis-Feinstein's death poses two big questions for US Senate Democrats

Dianne Feinstein: Trailblazing Senator dies aged 90

Chinese hackers stole 60,000 emails from senior State Department officials in May, source says