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Photo: Caroline Brehman/CQ Roll Cal/POOLl via Getty

President Trump backed a 2022 challenge to Senate whip John Thune (R-S.D.) on Tuesday, tweeting that his political career will be "over" and calling Thune a "RINO" — Republican in name only.

Why it matters: As the end of his term nears, the president has turned on virtually everyone around him. Tuesday’s tweet reflects his last bid for power as he attempts to cling to his presidency.

Driving the news: Trump claimed Senate Republicans would be "down 8 seats" without his support in the last election. Singling out Thune, whom he nicknamed "Mitch's boy," Trump said "South Dakota doesn’t like weakness.”

  • Trump’s comments come one day after Thune told Bloomberg that the president’s efforts to overturn election results were "going down like a shot dog."
  • Thune and Senate Majority Leader Mitch McConnell (R-Ky.) have both urged Republicans not to object to certifying President-elect Joe Biden's win in the Jan. 6 joint session.

Go deeper: Trump turns on everyone

Go deeper

The week the Trump show ended

Data: NewsWhip; Chart: Andrew Witherspoon/Axios

Donald Trump was eclipsed in media attention last week by President Biden for the first time since Trump took office, according to viewership data on the internet, on social media and on cable news.

Why it matters: After Trump crowded out nearly every other news figure and topic for five years, momentum of the new administration took hold last week and the former president retreated, partly by choice and partly by being forced off the big platforms.

Young people want checks on Big Tech's power

Data: Generation Lab; Chart: Sara Wise/Axios

The next generation of college-educated Americans thinks social media companies have too much power and influence on politics and need more government regulation, according to a new survey by Generation Lab for Axios.

Why it matters: The findings follow an election dominated by rampant disinformation about voting fraud on social media; companies' fraught efforts to stifle purveyors of disinformation including former President Trump; and a deadly Jan. 6 insurrection over the election organized largely online.

Biden gets mixed grades on revolving door

Illustration: Sarah Grillo/Axios

President Biden is getting mixed marks for his reliance on industry insiders to staff his administration during its first 100 days.

Why it matters: Progressives have leaned on the new president to limit the revolving door between industry and government. A new report from the Revolving Door Project praises him on that front but highlights key hires it deems ethically questionable.