Society Young Americans avoid dating across party lines

[Maciamo]

A new study found that young Americans tend to reject potential partners from opposing political parties much more strongly than they prefer those who share their own political views.

I recently posted a map of political polarisation and it won't surprise anyone to see that US society is heavily polarised politically,

The study examined why politically similar partners are preferred in online dating and whether these effects differ by gender and party. Using a survey experiment with 1,097 US Americans aged 20–33, participants rated fictional dating profiles that randomly displayed "Democrat," "Republican," or no party affiliation.

Rejection Over Preference​

The headline finding is that romantic avoidance of out-partisans drove behavior more than attraction to co-partisans. In other words, people weren't mainly swiping right on their own party — they were swiping left on the other one. The negative effect of seeing an opposing party label was consistently 2–3× larger than the positive effect of seeing a matching one.

Why It Happens: The Three Mechanisms​

Three psychological pathways explained the partisan dating gap:

• Perceived similarity (values & lifestyle) — the strongest mediator in both co-partisan preference and out-partisan rejection; people assume shared or clashing worldviews based on party alone
• Expected social approval — concern that friends and family would disapprove of dating an out-partisan was the second biggest driver of rejection
• Perceived character quality (intelligence, kindness, honesty) — out-partisans were judged as having worse character, though this played a smaller role than similarity

Essentially, people use party affiliation as a proxy for personality and lifestyle, not just politics.

Who Shows It Most?​

The effects varied significantly by gender and party:

• Republican men and women showed the strongest in-group preference (favoring co-partisans)
• Democratic women showed the strongest out-group rejection (avoiding Republicans most intensely)

This partially supports the "asymmetric affective polarization" theory — Democratic women are the most affectively polarized group — but Republican in-group preference aligns more with the "dating market" theory, where Republicans have more favorable co-partisan dating prospects.

 

[Maciamo]

The political situation in the United States is very unusual for a developed country in that there are only two major parties. In this setting it is easy for polarisation to take place. As soon as the Democrats and Republicans lost their moderate Centre, it became a case of Us versus Them, and once that process is started it's only getting worse over time.

In contrast, in a country like Belgium, where there are five main political parties in each linguistic half (French speaking and Dutch speaking), plus a few minor parties, it's much harder to see things in black or white. When there are only two parties, you get a line and polarization happens once the parties move in opposite direction against that line toward the extremities. But if you have five parties that share a lot of similar core values (universal healthcare, social security, free education, fighting climate change, pro-EU, pro-abortion, anti-death penalty, and so on) and only differ in the specifics, it's almost impossible for society to become politically polarized.