Colombia Presidential Election Runoff: Margin of Victory

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Market context

Colombia’s presidential runoff is the contest between Abelardo de la Espriella and Iván Cepeda, with the market settling on the absolute gap in their shares of valid votes. The first round left de la Espriella on 43.7% and Cepeda on 40.9%, a 2.84-point spread, which is the cleanest baseline for any programmatic model that is mapping turnout, vote transfers and late swing into a margin bucket rather than a simple winner/loser call.[1][2]

For historical framing, the current 1% YES price implies the market is treating a mid-sized margin as a long shot relative to the ballot arithmetic already on the board. That is consistent with the first-round result being close enough that small shifts in centrist, blank, or abstention-prone voters can matter, but still not a natural fit for a wide victory band unless one side consolidates decisively. Commentary around the runoff has described it as one of Colombia’s closest recent contests, with roughly 11.18% of valid votes in the first round going to Paloma Valencia and Sergio Fajardo, a bloc that can alter the final gap if it breaks unevenly.[1][3]

For traders using bots, copy-trading or conditional orders, the key inputs are not daily price noise but event dependencies: final official certification, turnout, and whether pre-runoff polling or last-minute endorsements materially shift vote transfer assumptions. Al Jazeera reported on 18 June that AtlasIntel’s poll had de la Espriella at 50.9% to Cepeda’s 43.1%, with about 5.9% undecided or inclined to nullify, underscoring how the executable path to a narrow or wider margin depends on late movement more than the first-round result alone.[4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

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