Sen. Jon Tester calls on Biden to drop 2024 presidential bid AxiosVulnerable Dem Tester calls on Biden to drop out after giving Schumer heads up Fox NewsSenator Jon Tester, Facing Tough Re-Election Fight, Urges Biden to Drop Out The New York TimesBehind the Curtain: Top Dems now believe Biden will exit AxiosTop Democrats Prepare for Campaign Without Biden The Wall Street Journal