Here's an experiment you can run on yourself right now. Picture a politician missing a Senate hearing to attend a family event. Now picture your favorite senator doing it, and your least favorite senator doing it. If the excuse you're willing to accept changes depending on whose face you pictured, congratulations: you just proved the entire thesis of this article, and so did almost everyone else who tried it.
This is not a column about which politicians are good or bad. It's about a much more uncomfortable question: why do smart, otherwise reasonable people abandon the critical thinking they'd apply to a bad contractor or a shady online seller, the instant a politician they like is involved? And why does the exact same behavior get a pass for one camp and a public flogging for the other?
The data on this isn't vague. Political psychologists have replicated this finding for decades, and it should embarrass everyone equally, because nobody is exempt from it.
The Jersey Effect: When the Policy Doesn't Matter, Only the Team Does
In a widely cited 2003 experiment, psychologist Geoffrey Cohen showed Democratic and Republican participants a welfare proposal. Some saw a generous version, some saw a harsh, stringent version. The twist: each participant was told the plan was backed by their own party or by the opposing party, regardless of which version they actually read.
The result should be a wake-up call for anyone who thinks they evaluate policy on the merits. Liberal participants rated the exact same proposal a 5.46 out of 9 when told Democrats supported it, and a 3.15 when told Republicans did, even when the underlying policy hadn't changed. Conservatives did the mirror image: 5.49 when it was labeled Republican, 2.69 when labeled Democrat. The content of the policy barely moved the needle. The jersey did.
Here's the part that should really sting: when asked afterward what drove their opinion, participants insisted it was the substance of the proposal and their personal values. They rated the influence of party as minimal. The data said otherwise. People weren't lying. They genuinely could not see the bias operating on them in real time. That's not a character flaw unique to one type of voter. It's a design flaw in how human brains process group loyalty, and it runs across every political spectrum on earth.
Corruption Tolerance Works the Exact Same Way
If double standards only applied to boring welfare percentages, this would be a curiosity. It doesn't stop there. It extends to how we treat actual wrongdoing.
Research on corruption and voting behavior has found something that should trouble anyone who claims to hold politicians "accountable": when corruption allegations surface, voters are consistently more willing to punish the opposing candidate than their own. Studies tracking real elections after corruption revelations found that a challenger's own supporters were more willing to punish their candidate for corruption than an incumbent's supporters were to punish theirs. Researchers describe this as a "non-universal norm of accountability": accountability that switches on and off depending on whose side is exposed. Voters aren't applying a consistent standard of integrity. They're applying a standard that conveniently protects their own team.
This is precisely why information campaigns, fact-checks, and anti-corruption exposés so often fail to move anyone's opinion. It was never a knowledge problem. Telling a partisan something new about their preferred politician doesn't trigger critical thinking. It triggers defense.
The Philippines Is a Working Laboratory for This
You don't need a psychology journal to see this play out. You need to look at the numbers coming out of Philippine politics right now.
Start with trust. In Pulse Asia's March 2026 nationwide survey, President Marcos posted a 35% trust rating against 44% distrust, while Vice President Sara Duterte posted a 54% trust rating against just 26% distrust, despite the two having governed the same country, facing overlapping corruption controversies, during the same stretch of time. People are not rating performance in a vacuum. They're rating a name, a family, a faction, and then backfilling the justification.
Meanwhile, "fighting graft and corruption" ranked as the second most urgent national concern among Filipinos in that same survey, cited by 47% of respondents, up a full 19 percentage points from the year before. Sixty-seven percent disapproved of the administration's efforts against corruption, itself up 14 points. Corruption anxiety is rising sharply. And yet the same electorate that says corruption is its second-biggest worry keeps returning the same families and surnames, often the very officials implicated in the allegations, back into office.
That's not a contradiction if you understand the mechanism. It's the mechanism working exactly as psychology predicts. Corruption is horrifying in the abstract and in the other camp. It's an unfortunate exception or "politics as usual" when it's your own.
Then there's the dynasty math, which makes the tribal loyalty problem structural rather than incidental. Investigative research from the Philippine Center for Investigative Journalism found that 113 of the Philippines' 149 cities are already ruled by political dynasties, with roughly 53% of city mayors seeking reelection in 2025 belonging to a dynastic family, and roughly one in three city councils already filled with a sitting mayor's relatives. When the same handful of families dominate the ballot cycle after cycle, "critical evaluation of the candidate" quietly collapses into "loyalty to the surname." You're no longer voting for a platform. You're renewing a subscription.
We Do This With Marriage Too, So Don't Feel Special
If you think this is a uniquely Filipino or uniquely American problem, it's neither. It's a human one, and the trend line is getting worse everywhere data has been collected.
In 1960, only 4 to 5% of Americans said they'd be unhappy if their child married someone from the opposing political party. By 2010, that number had climbed to roughly a third of Democrats and half of Republicans. People have become more tribal about politics than about almost anything else in their personal lives, a shift researchers call "affective polarization," and it's measurable, not anecdotal.
It gets stranger. In one striking experiment, participants were asked to choose between two scholarship applicants where one candidate had a stronger academic record (a 4.0 GPA) than the other (a 3.5 GPA). When the only distinguishing detail given was party affiliation, 79.2% of Democrats chose the Democratic applicant and 80% of Republicans chose the Republican applicant, frequently overriding the objectively stronger candidate to do it. Tellingly, the same study found that racial bias in an equivalent test was far smaller. Partisanship, in other words, has become a stronger driver of snap judgment than race in identical experimental conditions. Whatever you think that says about modern political identity, it isn't flattering.
The Media Plays Along, and So Does the Algorithm
None of this happens in a vacuum. Newsrooms and social feeds have figured out, whether cynically or accidentally, that outrage about the other side monetizes far better than self-scrutiny about your own. A scandal involving an opposing politician gets the aggressive headline and the follow-up investigation. The identical offense committed by an ally gets a soft "developing story" framing and a much slower news cycle. Voters bring bias to the information, and the information arrives pre-sorted to confirm that bias before it ever reaches them. That's not an excuse for the double standard. It's an accelerant on top of it.
Why We Do It: Identity, Not Ignorance
None of this happens because voters are stupid. It happens because political affiliation operates as a tribal identity, closer to a sports team or a religion than a spreadsheet of positions. Defending your team's politician from criticism doesn't feel like suspending your critical thinking. It feels like loyalty, and loyalty feels virtuous. That's exactly what makes it so hard to see in the mirror: the bias is dressed up as a value.
This is also why "just present people with the facts" so rarely works as a strategy for accountability. Facts aren't being rejected because they're unclear. They're being rejected because accepting them would mean admitting your team failed, and for most people, protecting the identity wins over updating the belief almost every time.
What Actual Critical Thinking Would Require
If you want to know whether you're actually thinking critically about a politician, or just defending a jersey, there's a blunt test: would you accept the same excuse and demand the same evidence, no matter whose name was attached to it? Run these before you post, share, or defend anything political:
Would this explanation satisfy you if your least favorite politician gave it?
Are you demanding evidence from the accusation, or demanding evidence that lets you dismiss it?
If you swapped the surnames in this story, would your reaction change? If yes, you're not evaluating the act. You're evaluating the family.
Is your outrage proportional to the offense, or proportional to who committed it?
Would you accept "he's family, of course I'll vote for him" as a defense if a rival dynasty said it?
If a missed vote, an unexplained bank deposit, a nepotism hire, or a dynasty running unopposed only bothers you when the other family does it, that isn't political analysis. It's tribal reflex wearing the costume of political analysis, and the data above says you are very much not alone in wearing it.
Critical thinking that only activates against your opponents isn't critical thinking. It's ammunition. The uncomfortable truth this data points to is that most of us are not short on the ability to think critically about politicians: we're short on the willingness to point that thinking at our own side. Fixing that doesn't require a new survey or a better fact-check. It requires the one thing tribalism makes almost impossible: applying the same standard when it costs you something.
Sources
Cohen, G. L. (2003), "Party Over Policy: The Dominating Impact of Group Influence on Political Beliefs," Journal of Personality and Social Psychology, via Stanford GSE. Iyengar, S. et al., "The Origins and Consequences of Affective Polarization in the United States," Annual Review of Political Science, Stanford Polarization and Social Change Lab. Pulse Asia Research Inc., March 2026 Nationwide Survey on Ratings and Urgent National Concerns. Philippine Center for Investigative Journalism (PCIJ), "113 out of 149 Philippine Cities Also Ruled by Political Dynasties" (2025). CEGA (Center for Effective Global Action), research collection on voter punishment of corrupt politicians.