For a time, Marco Rubio seemed to embody the hope that the Republican Party might modernize without losing its ideological spine. Young, charismatic, and the son of Cuban immigrants, he was hailed in the early 2010s as a conservative who could articulate traditional Republican values in a way that spoke to a broader, more diverse America. When he launched his presidential campaign in 2015, he positioned himself as a candidate of the future, one who could move past the culture wars and appeal to younger voters. To many in the media and even among some Democrats, Rubio seemed reasonable, serious, and, crucially, not dangerous.

This perception was always something of a projection. While Rubio carried himself with more polish and optimism than the emerging populist wing of the party, his actual positions were firmly in line with movement conservatism: staunchly anti-abortion, fiscally hawkish, anti-union, and reflexively interventionist on foreign policy.  Yet, because he wasn’t loud or cruel about it, and because he occasionally flirted with bipartisan gestures, most notably as a member of the 2013 “Gang of Eight” that attempted to pass comprehensive immigration reform, he was miscast as a moderate. The immigration effort was perhaps the high-water mark of his reputation as a bridge-builder, but the vicious backlash from conservative media and grassroots activists forced him into retreat. Rubio didn’t defend the bill; he distanced himself from it. This was an early sign of a pattern that would define his political choices; say the right thing when it’s safe, but retreat when it’s not.

Rubio’s realignment became undeniable with the rise of Donald Trump. In 2016, he famously called Trump a “con artist,” mocking his hands and personal behavior in an unusually caustic exchange; but after dropping out of the presidential race, he quickly endorsed Trump and began the long process of political adaptation. By the time Trump had cemented his control over the GOP, Rubio had made his peace with the new order. He supported Trump through both impeachment trials, echoed his talking points about “election irregularities” in 2020 without directly endorsing false claims, and has steadily absorbed the rhetoric and priorities of the MAGA movement, particularly on issues like “wokeism,” China, and the weaponization of federal institutions.

What surprises many observers now is not so much Rubio’s positions, many of which he has held, if more quietly, for years, but how fully he has embraced the tone and sensibility of the MAGA worldview. The man once billed as a “next-generation Republican” has become another foot soldier in the party’s turn toward grievance politics, culture war maximalism, and a brand of authoritarian-adjacent populism that defines today’s GOP. His evolution is not unique. It mirrors that of a party whose internal incentives now reward loyalty to Trump and punishment for dissent. Rubio is not leading that transformation; he’s adapting to it, and perhaps surviving because of it.

In truth, the notion that Rubio was ever a centrist or a true reformer was a comforting myth told by centrists and pundits who longed for a less chaotic Republican Party, but Rubio was never that man. He was always a disciplined conservative with big ambitions, more fluent in elite political language than many of his peers, but no less ideologically committed. The real shift, then, is not in Rubio’s principles, but in the conditions under which he operates. The surprise people express today is less about his transformation, and more about our own willingness to believe he was something else.