Great work, thanks for writing this up! I agree that excessive polarisation is an important issue and warrants more EA attention. In particular, polarisation is an important risk factor for s-risks.
Political polarization, as measured by political scientists, has clearly gone up in the last 20 years.
It is worth noting that this is a US-centric perspective and the broader picture is more mixed, with polarisation increasing in some countries and decreasing in others.
If there’s more I’m missing, feel free to provide links in the comment section.
Olaf van der Veen has written a thesis on this, analysing four possible interventions to reduce polarisation: (1) switching from FPTP to proportional representation, (2) making voting compulsory, (3) increasing the presence of public service broadcasting, and (4) creating deliberative citizen’s assemblies. Olaf’s takeaway (as far as I understand it) is that those interventions seem compelling and fairly tractable but the evidence of possible impacts is often not very strong.
I myself have also written about electoral reform as a possible way to reduce polarisation, and malevolent individuals in power also seem closely related to increased polarisation.
Great post—I think it’s extremely important to explore many different problem areas!
Some further plausible (in my opinion) candidates are shaping genetic enhancement, reducing long-term risks from malevolent actors, invertebrate welfare and space governance.