When navigating online dating applications, young Americans tend to reject potential partners from opposing political parties much more strongly than they prefer those who share their own political views. As dating applications have become one of the primary ways people meet, the information displayed on a digital profile carries significant weight. A new study published in the European Sociological Review suggests that this political dealbreaker is mostly driven by assumptions about a potential partner’s lifestyle and whether family and friends would approve of the match.
In recent years, American politics has been marked by a phenomenon known as affective polarization. This term describes a growing tendency for individuals to view members of their own political party positively while feeling a strong emotional aversion toward supporters of the opposing party. This animosity often spills over into everyday life, moving beyond abstract political debates. It can influence private decisions about who people want as roommates, who they hire for jobs, and who they choose as romantic partners.
Sociologists refer to the tendency to partner with someone who shares similar political views as political homogamy. When two romantic partners share the same political beliefs, they tend to pass those beliefs down to their children much more effectively. This cycle can increase polarization from one generation to the next. While prior surveys provide evidence that people prefer to date within their own political party, the specific underlying reasons for this preference remain less understood.
Shannon Taflinger, a doctoral student at the University of Cologne, and Ansgar Hudde, a postdoctoral researcher at the University of Cologne, wanted to explore the mechanisms that drive these dating preferences. The researchers sought to understand whether political labels alter how a person perceives a potential partner’s character. They also wanted to know if these labels change assumptions about lifestyle similarities and the anticipated reaction from a person’s social circle.
Taflinger drew on her own background when conceptualizing the research. “Growing up in a swing state in the United States, I witnessed firsthand how political animosity can fracture relationships and communities,” Taflinger said. “That experience sparked a long-standing interest in polarization and its effects on interpersonal dynamics.”
“When I came across research showing that political ideology shapes people’s dating preferences, I saw an opportunity to dig deeper — to move beyond the ‘what’ and understand the ‘why’ behind the phenomenon,” Taflinger added.
To test these questions, Taflinger and Hudde conducted an online experiment with 1,097 Americans between the ages of 20 and 33. The participants all identified as or leaned toward either the Democratic Party or the Republican Party. The study was designed to closely mimic the experience of swiping through popular online dating applications. This age range was selected because it reflects the period when many Americans are actively searching for long-term partners.
Each participant viewed six fictional dating profiles corresponding to the gender they were interested in dating. These profiles featured photographs, names, ages, occupations, hobbies, and short biographies. To isolate the effect of politics, the researchers randomly assigned a political label to each profile. Two profiles were labeled Democrat, two were labeled Republican, and two included no political information at all. The researchers intentionally chose neutral hobbies and occupations to avoid accidentally hinting at political stereotypes.
After viewing each profile, participants rated their romantic interest on a five-point scale. They did this by indicating how likely they would be to send a message or respond to a message from that person. The participants also rated the imagined person on several other metrics using similar scales. This helped the authors understand the specific reasoning behind any changes in romantic interest.
First, the respondents evaluated the perceived character quality of the person in the profile. They rated the fictional daters on traits like intelligence, selfishness, kindness, honesty, and prejudice. Second, they estimated their perceived similarity to the person. They guessed whether they shared similar basic values and lifestyle preferences based on the profile provided. Finally, the participants rated their expected social approval, indicating whether they thought their friends and family would approve of them dating the specific person.
The findings show that political affiliation significantly shapes romantic interest, but mostly in a negative direction. The participants showed only a slight preference for individuals belonging to their own political party compared to profiles with no political information. However, they demonstrated a moderate to strong aversion to profiles featuring the opposing political party.
When exploring the mechanisms behind this aversion, the researchers found that perceived similarity played the largest role. Participants tended to use a differing political label as a proxy, or substitute indicator, for assuming the person had incompatible values and a clashing lifestyle. Instead of judging the person’s inherent goodness, they simply assumed they would not have much in common in their day-to-day lives.
The second largest driver of out-group rejection was expected social approval. Participants often assumed that their close friends and family members would disapprove of them bringing home a partner from the opposing political party. This suggests that the pressure to conform to the political norms of one’s social network heavily influences private dating decisions. A person might reject an otherwise attractive partner simply to avoid awkward family dinners or judgment from peers.
Surprisingly, perceived character quality was the weakest factor in driving romantic rejection. Participants did rate out-group members slightly lower on traits like kindness and intelligence. However, this did not drive the dating rejection as much as assumed lifestyle differences and family approval did. The researchers noted that partisan selectivity in dating operates more through inferring broad differences in daily routines than through generalized negative character judgments.
The authors also found significant differences based on the gender and political party of the participants. Republican men and Republican women both showed a distinct preference for fellow Republicans and a strong aversion to Democrats. On the other hand, Democratic participants did not show a strong preference for fellow Democrats over profiles with no political affiliation.
Instead, Democratic participants were primarily motivated by an avoidance of Republicans. Taflinger noted in a related press release that many Democrats in the study were not necessarily searching for a fellow Democrat. They were rather searching for someone who was simply not a Republican. This suggests that negative partisanship drives dating choices more strongly for Democrats than positive in-group loyalty does.
This avoidance was especially pronounced among Democratic women. The study provides evidence that Democratic women exhibited the strongest rejection of the opposing political party out of any group tested. Their avoidance of Republican profiles was roughly twice as strong as the avoidance shown by Democratic men. Republican men and Republican women showed a moderate rejection of Democrats that fell somewhere in the middle.
“People rely heavily on partisan labels to form impressions of others,” Hudde told PsyPost. “If you don’t know someone well and you reveal where you stand politically, that single piece of information shapes how they see you, whether they consider you similar to themselves and how they judge you on traits like intelligence and honesty.”
For single people navigating modern romance, these results provide evidence of just how weighty a simple profile badge can be. “Our study uses an online dating scenario as a test case, so it could be particularly interesting for those who are using dating apps,” Hudde said. “Most of these apps let you choose whether to display your political orientation.”
“If you do display it, you can be sure that many people will pay attention to it and that it will affect their judgment of you and of how well you’d fit together,” Hudde continued. “And there’s an asymmetry: people on the other side of the political divide penalize you for your politics more than people on your own side reward you for it.”
As with all research, there are some limitations. Because the study required the use of fictional dating profiles, participants might have behaved slightly differently than they would in a real-world dating scenario. The experiment also presented political information upfront. Real-life dating often involves uncovering a partner’s political views during later stages of getting to know them.
Additionally, the researchers only tested the labels of Democrat and Republican. It remains unclear how participants might react to profiles labeled as independent, apolitical, or supportive of third-party candidates. The single-item measure used for expected social approval also combined family and friends. A person might face very different reactions from their parents compared to their peer group, which this study could not separate.
Future studies could explore how these mechanisms operate in different cultural contexts. In European countries with multi-party systems, romantic compatibility might depend on whether supporters of different parties fall within the same broader political spectrum. The authors suggest that the mechanisms discovered in this dating experiment might also apply to other areas of life. Similar social judgments could influence how employers evaluate job candidates if they discover a person’s political affiliation during the hiring process.
The study, “Why do young US Americans avoid cross-partisan dating? A closer look at mediators and variation by gender and party“, was authored by Shannon Taflinger and Ansgar Hudde.
