On July 8, 2026, researchers from the University of Barcelona revealed how economic expectations and political polarization significantly influence fertility rates and marriage trends in Spain. The study, utilizing data from the unexpected 2004 Spanish elections, highlights demographic shifts linked to changes in political sentiment.
Impact of Political Changes on Economic Outlook
The study examined the electoral surprise when the Spanish Socialist Workers' Party (PSOE) defeated the Popular Party (PP) in March 2004. This unexpected result altered economic expectations among citizens, leading to distinct demographic consequences. Supporters of the PSOE became more optimistic, while PP supporters experienced a sharp decline in confidence.
Researchers found that within two months post-election, the expectations index for PP supporters fell between 0.6 and 0.8 points, a drop more significant than fluctuations between economic expansion and crises. This shift directly correlated to a decrease in pregnancies and marriages in areas with strong PP support.
Demographic Changes Following the 2004 Elections
In municipalities favoring the PP, there was a recorded decrease of 0.14 pregnancies per thousand women shortly after the election. Additionally, the abortion rate spiked, showing an increase of nearly 0.05 per thousand women. These figures are comparable to the demographic effects observed following economic incentives like the €2,500 cheque bebé introduced in 2007.
