In Europe and the United States, the post-1945 era marked a shift from ‘mass parties’ to broad ‘big-tent’ parties. Mass parties had operated on strict class lines. Democratic socialist outfits appealed to industrial workers, while conservative parties represented business elites and religious traditionalists. Big-tent politics had already taken root in North America due to its vast geography, rapid industrialisation, and diverse immigrant and Black populations. To build winning national majorities, the Democratic and Republican parties developed broad platforms, accommodating competing internal factions under a shared umbrella and a loose ideological core. This was the beginning of big-tent parties. The Democratic Party in the US, especially from the early 1930s onwards, has housed democratic socialists, progressives, social liberals and pro-business centrists, alongside its conservative Southern wing, which existed within the party till the early 1960s. The latter was mainly to bag votes from the ‘Bible belt’ states. The modern Republican Party functions as a broad umbrella encompassing social conservatives, Christian nationalists, fiscal centrists and right-wing populists. A similar evolution occurred in western Europe after World War II. According to the German jurist Otto Kirchheimer, as the post-war economic growth expanded the middle-class, most voters began to favour pragmatic moderation over class antagonism. Left-wing parties, such as the UK Labour Party and Germany’s Social Democratic Party, shifted toward a progressive centre-left stance, while centre-right parties, such as the British Conservatives and Germany’s Christian Democrats, softened their hard social moralism and elitism to capture votes from across the classes. Political scientists mostly view big-tent parties as important democratic stabilisers. By absorbing diverse economic, regional and social groups, a big-tent outfit facilitates them to negotiate and form a consensus under a single umbrella. This prevents extreme polarisation and avoids the chaotic parliamentary fragmentation typical of unstable multiparty systems that lack big-tent parties. From the Democrats and Republicans in the United States to the PPP, PML-N and PTI in Pakistan, the very diversity that makes big-tent parties electorally powerful can also become their greatest vulnerability Big-tent outfits combine diverse demands and elements, transforming societal rivalries into organised, workable governing units. The success of a big-tent party depends on how they design mechanisms to manage internal dissent. Rather than enforcing monolithic obedience, party structures use primary elections, regional quotas and factional appointments to give diverse interest groups a seat at tables that matter. This internal diplomacy allows the overarching party to remain flexible. A well-managed big-tent party can position its platform across different political cycles, moving slightly leftward or rightward to keep pace with changing electorate moods, without suffering an electoral decline. Following the 1947 Partition, India saw a classic big-tent system emerge under the Indian National Congress (INC). Operating on a secular, centre-left platform, Congress absorbed diverse socialist, moderate and regional groups to maintain a 30-year political monopoly. As the nation’s founding party, it offered a shared national brand that co-opted multiple local political elites and bridged vast linguistic and religious divides. INC’s dominance was broken in 1977 by the Janata Party (JP). JP was a broad anti-INC coalition of secular, regional, Hindutva and left-wing groups who couldn’t find a place under INC’s tent. However, JP illustrated a common pitfall related to big-tent politics: unmanaged factional infighting. Driven by intense ideological friction and personal rivalries among its leadership, JP collapsed from within after just three years in power. When internal fractures widen in big-tent parties, the parties tend to lose their electoral appeal or fall prey to radical internal takeovers. This occurred within the US Republican Party, where the right-wing populist Maga (Make America Great Again) movement led by Donald Trump weaponised primary elections to displace the Republican Party’s dominant free market and moderate factions. The populist wing of the party then reoriented the outfit into becoming a nationalist-populist vehicle. But this transformation has introduced severe vulnerabilities, driven by infighting within the party’s populist wing, foreign policy controversies and an increasing backlash in the US against Israeli lobby groups such as the American Israel Public Affairs Committee (Aipac). Trump’s approval ratings have plummeted. The Democrats are facing their own internal tensions. Key primary victories by progressive candidates of the party have alarmed its centrist factions, who fear left-leaning Democrats could alienate moderate voters in upcoming national contests. In South Asia, apart from INC and then JP, the Bharatiya Janata Party (BJP) began to function as a big-tent party. Historically a Hindu nationalist party with an upper-caste base, the BJP began to widen its umbrella. It started to accommodate distinct groups: Hindutva hardliners, big business groups, populists and pragmatists absorbed from opposition parties. Hindutva remains the BJP’s ideological anchor, though, even as it increasingly applies big-tent electoral strategies. Pakistan developed a big-tent model led by the Pakistan Peoples Party (PPP) and the Pakistan Muslim League-Nawaz (PML-N). Before these, Pakistan’s founding party, the Muslim League, had successfully managed to combine a wide range of left to right groups to win enough seats in the 1946 elections in British India, which allowed it to push for a separate Muslim-majority country. But after the creation of Pakistan, friction between different groups in the League became so intense that the party fractured. The PPP, formed in 1967, shaped a centre-left core with diverse leftist, progressive, liberal and centrist groups, while the PML-N, formed in 1992, united urban pro-business cohorts, landed elites, centrists and social conservatives. In 2011, facilitated by the then military establishment, the Pakistan Tehreek-i-Insaf (PTI) expanded into a third big-tent party by absorbing traditional ‘electables’ from the two existing big-tent outfits. PTI operated as an archetypal contemporary populist party, weaving a flexible and performative core of right- and left-wing tropes around a central anti-corruption narrative and personal loyalty to its leader. This vague ideological architecture allowed urban middle-class youth, conservatives, landed elites and mainstream Islamists to coexist under one banner. However, like India’s Janata Party, PTI struggled to manage its internal frictions and rapidly unravelled once its top leader was removed from power and imprisoned. Big-tent parties remain double-edged constructs. While their capacity to combine diverse interests and build broad platforms shields democracies against fragmentation, their reliance on a conflicted ideological core and mismanaged internal conflicts leaves them vulnerable. This requires continuous maintenance. Without disciplined leadership, big-tent parties risk devolving into factional warfare, opening the door to radical takeovers or collapse when internal consensus breaks down. Maintaining a workable equilibrium remains a constant challenge. In Pakistan, big-tent parties such as the PML-N and the PPP have done remarkably well to avoid disintegration despite attempts by previous military establishments to dismantle them by exploiting their internal frictions. This ability to regroup and survive is something that PTI has, so far, failed to demonstrate. Published in Dawn, EOS, August 16th, 2026