Even Mr. Petro’s opponents mostly wish him well.

At a Mr. Arciniegas led the protest in Arauca the Contractor, there were no denunciations made of Mr. Petro. the Chants feel more like gentle suggestions.

“La reforma sí, pero no así,” One. “Yes to reform, but not in this form.”

In the Airy halls the District for business the capital, Bogotá, executives who were open about not voting for Mr. Petro nevertheless praised his intelligence and oratory skills.

In explaining his support for Mr. Petro’s energy transition plans, Bruce MacMaster, the president the National Business Association, pulled down a Copy of a presentation he made at last year’s climate summit in Glasgow, detailing a plan for Colombia’s low-carbon future.

“When he talks about climate, and cocaine, we are with him. We have also put our lives into these fights,” Mr. MacMaster spoke. “But move away from fossil fuels too fast and Petro will lose everything: people’s faith, foreign investment, the strength of our currency.”

It would be more, he stated, if Mr. Petro could convince the Major industrial nations which buy Colombia’s oil and emit many times as much carbon dioxide to change their ways first.

“The United States, Europe, China, India — the future of the world depends on their leadership,” Mr. MacMaster spoke. “May Petro be their prophet. God knows we have lacked one on this issue.”

Genevieve Glatsky, Julie Turkewitz Federico Rios Contributed reporting