First-past-the-post system backfires on Labour and Tories as multi-party politics reshapes UK elections

Erosion of Labour-Conservative duopoly; rise of populist (Reform) and progressive (Greens) challengers fragmenting the electorate. This weakens traditional establishment parties' ability to secure majority governments and may force coalition politics, reducing UK's decisive executive power internationally. Electoral system now disadvantages rather than protects the two major parties.

Similar to Weimar Germany's multi-party fragmentation (1920s-30s) or contemporary European politics (Italy, Netherlands), where proportional representation and party proliferation complicate governance and coalition-building, though UK context remains stable.

Increased political uncertainty may delay consumer-facing policy decisions on taxation, energy costs, and regulation. Coalition/minority governments could lead to policy gridlock affecting household finances, energy bills, and investment decisions.

Potential electoral reform debate (shift toward proportional representation); policy instability as coalition governments require compromise; possible divergence on climate policy (Greens), immigration (Reform), and fiscal policy. Business regulatory environment becomes less predictable.