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Based on the latest opinion polls and election result analysis before January 13, 2026, António José Seguro has an extremely high probability of winning the 2026 Portuguese presidential election. The following are key arguments supporting this conclusion:
As of January 13, 2026, António José Seguro is leading in the polls, and as a moderate candidate of the center-left Socialist Party, he is expected to receive broad support from mainstream political forces in a possible second round. Although far-right candidate André Ventura's support is rising, the rejection of him by mainstream parties and Seguro's centrist path give him a greater chance of winning. Historical data shows that when Portuguese presidential elections go to a second round, the more moderate and broadly acceptable candidate usually wins.
As of January 13, 2026, Seguro's path to victory can be broken down into two steps: entering the second round and winning the second round. The odds of winning the second round are extremely high—all head-to-head polls show him crushing Ventura by a wide margin (DN/Aximage field survey on January 9-12: 49% to 29%, a 20-point lead; after excluding undecided voters, approximately 66:26). Ventura's voter loyalty is the highest (94% will not change their minds), but his ceiling is extremely low: CESOP polls show only 33% of voters say they might vote for him, while Seguro has 54%, the strongest ability to attract votes among all candidates. For the far right to double from about 24% to over 50% in a two-person contest would require a massive shift of center-right (PSD, IL, Admiral) voters, which current data does not support at all. The main risk is not in the second round, but in whether he can make the top two in the first round: CESOP (January 6-9) shows Ventura 24%, Seguro 23%, Cotrim 19%, with Cotrim posing a threat within the margin of error. But the electoral structure favors Seguro—left-wing votes are almost entirely concentrated on him (BE, PCP, Livre candidates each only 1-2%), while the right-wing vote is split among Ventura, Cotrim, Gouveia e Melo, and Marques Mendes; at the same time, he has rebounded from about 15% in December to 23%, while the only threat, Cotrim, was publicly accused of sexual harassment by a former parliamentary assistant on January 12, dampening his momentum in the final stretch. Comprehensive calculation: probability of entering the second round about 85-88%, probability of winning after entering about 89% (about 95% against Ventura, only a slight 46:44 advantage against Cotrim), overall win probability about 80%.
As of January 13, 2026, António José Seguro, as the Portuguese Socialist Party candidate, continues to lead in polls, the far-right candidate Ventura is jointly boycotted by mainstream political forces, and Seguro will receive broad cross-party support in the second round, with odds far higher than his opponents.
As of January 13, 2026, Portuguese presidential election polls show that former Socialist Party leader António José Seguro is in the first tier in first-round voting intentions. Since no candidate is expected to receive more than 50% of the votes in the first round, the election is highly likely to go to a second round. According to second-round head-to-head polls, Seguro can attract support from moderate, centrist, and left-wing voters across party lines when facing right-wing or far-right opponents, giving him a clear lead in the runoff. Therefore, it is predicted that Seguro has a high probability of winning the 2026 Portuguese presidential election.
Evidence as of January 13, 2026, shows that Seguro is very likely to enter the second round and win the final election with the support of the Socialist Party organization and the consolidation of anti-far-right votes; however, the top three in the first round are highly close, the abstention rate is relatively high, and there was a lack of reliable direct second-round polls at the time, so the advantage is not solid. [web:17][web:28]
As of January 13, 2026, the first round of the Portuguese presidential election is scheduled for January 18. António José Seguro, as former Secretary-General of the Socialist Party (PS), is one of the main center-left candidates. Polls at the time showed him leading or in a competitive front position, with a strong chance of advancing to the second round and facing far-right candidate André Ventura. Historical patterns and anti-far-right mobilization favor moderate candidates in the runoff, so it is judged that he is more likely to ultimately win.
According to the first-round voting results, António José Seguro leads with 30.69% of the vote, and his support is expected to increase further after entering the second round.
As of January 13, 2026, the first round of voting on January 18 has not yet taken place, and the final result is genuinely uncertain; this assessment uses only pre-election public information available before the cutoff, and any post-election reports appearing in search results are not used. Combining pre-election polling trends and the pattern of anti-far-right vote consolidation under Portugal's two-round system, I estimate Seguro's probability of being elected at about 60%, significantly higher than any single opponent, so I choose YES. The basis is as follows: In late November 2025, Reuters/Aximage polls showed Ventura and Gouveia e Melo tied for the lead, with a tight race and a high probability of a second round; thereafter, until early January 2026, Gouveia e Melo's support collapsed due to tax controversies, and the center-left candidate Seguro, supported by the Socialist Party, steadily rose in polls to about 20-25%, narrowing the gap with the leading far-right candidate Ventura to within the statistical margin of error; in a second-round scenario, centrist and anti-far-right votes would highly consolidate behind the mainstream candidate Seguro, making him the most likely winner in the second round. Since both first-round advancement and the second-round opponent are undetermined, I set the probability at 60% and the confidence level at medium.
As of January 13, 2026, first-round polls for the Portuguese presidential election show António José Seguro in the lead, and in potential second-round matchups he has the highest acceptance and lowest rejection rates; far-right Ventura may enter the second round but is rejected by most voters. Although Cotrim de Figueiredo could still squeeze into the second round and bring uncertainty, overall Seguro's probability of winning is slightly higher.
My judgment is YES, but the odds are only slightly better than a coin flip. As of the information cutoff, the latest Pitagórica rolling poll shows Seguro leading with 22.9%, ahead of Cotrim's 21.1% and Ventura's 19.7%, and he is the only candidate among the top five who continues to rise. Once Seguro advances to the second round, earlier CESOP tests show a huge advantage over Ventura and a slight edge over Gouveia e Melo; Ventura's high rejection rate is particularly favorable to Seguro. However, the top three in the first round are still statistically a technical tie, and Seguro lacks a reliable direct second-round test against the rapidly rising Cotrim, so only a small YES advantage can be given.
Based on available information as of January 13, 2026, António José Seguro is a competitive candidate in the 2026 Portuguese presidential election, but faces multiple challenges. Seguro served as Secretary-General of the Socialist Party from 2011 to 2014 and resigned due to poor poll performance, a weakness in his political record. Portuguese presidential elections typically involve multiple strong candidates and are highly competitive. In the absence of clear poll data showing Seguro as the frontrunner, combined with his political record and the uncertainty of Portuguese political history, I assess that his probability of winning is lower than not winning.
As of January 13, 2026, public opinion polls and the campaign situation show that António José Seguro's polling support is not in a leading position. Mainstream public opinion and election forecasting institutions in Portugal generally believe that he is not the most likely winning candidate in this presidential election, so it is judged that his probability of winning this election is low.
As of January 13, 2026 (knowledge cutoff, first round on 2026-01-18 not yet held), the latest polls show a technical tie among the top five: Ventura (Chega) about 20%, Marques Mendes (PSD) about 19%, Seguro (PS) about 17%, with Seguro in third place, not leading. To win, he must first enter the second round and then win it; the split of center-right votes among three candidates is favorable to him, but he is not the frontrunner, so the probability of 'not winning' (NO) is higher, although the election is highly uncertain.
As of January 13, 2026, public opinion polls and political analyses show that António José Seguro has not formed a clear lead in the Portuguese presidential election, his support rate is relatively low among the main candidates, and he does not have the momentum to win more than half of the votes in the first round. Based on the available information, his probability of winning the presidential election is low, so it is more inclined to judge that he will not win.
