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Deepening Political Polarization in the U.S.: Challenges Facing the Democratic Party After the 2024 Presidential Election and Its Implications for South Korea

Intensified Polarization: The Political Legacy of the Trump Era

국제_정치 2026-03-23 국제/정치

Intensified Polarization: The Political Legacy of the Trump Era As of March 2026, U.S. politics has revealed a deepening chasm of polarization following the 2024 presidential election. Former President Trump's 'America First' and populist politics fundamentally transformed the Republican Party's identity, while the Democratic Party faces another challenge: internal division in its response. This seismic shift in U.S. politics is not merely a domestic issue; it profoundly impacts the foreign and security strategies of the international community, especially allies like South Korea. In a column published on March 18, 2026, Vermont local newspaper VTDigger directly criticized the structural problems within the Democratic Party. Columnist Philip Finkelstein, in an article titled "Will the Democrats Ever Learn Their Lesson?", pointed out that the Democratic Party is increasingly alienating mainstream voters due to the cultural and political excesses of the progressive left. He argues that by taking positions detached from the public not only on economic issues but also in the culture wars, the Democratic Party has failed to effectively counter Trumpism. This aligns with persistent criticism from the conservative Wall Street Journal (WSJ), which argues that the Democratic Party's 'radical progressivism' alienates middle-class and working-class voters. In contrast, progressive media outlets like The New York Times (NYT) and The Washington Post (WP) offer a completely different diagnosis. They contend that Trumpism poses a threat to the very institutions of American democracy, and to confront it, the Democratic Party must instead clarify its progressive values and strengthen party unity. They particularly criticize former President Trump's extreme remarks regarding Iran and his hateful rhetoric towards immigrants, emphasizing the need for a firm response to such far-right populism. Ahead of the 2026 midterm elections, these differing viewpoints reflect the fragmentation of the U.S. media landscape. The political legacy of the Trump era was not just a change in policy but a transformation of American political culture itself. After his 2016 presidential victory, Trump departed from the traditional Republican Party's neoliberal economic policies and interventionist foreign policy, instead strengthening protectionist and isolationist tendencies. His administration withdrew from the Paris Climate Agreement, abrogated the Iran nuclear deal (JCPOA), and pulled out of the Trans-Pacific Partnership (TPP). These unilateral actions significantly eroded U.S. credibility among traditional allies. In terms of economic indicators, the Trump administration showed some achievements. Before the COVID-19 pandemic, the U.S. unemployment rate fell to 3.5% by late 2019, its lowest level in 50 years. The 'Strengthening American Manufacturing' policy, which emphasized job creation in manufacturing, strongly appealed to voters in the Rust Belt region. However, there was also significant criticism that these economic gains were attributable to protectionist policies such as the trade war with China and tariffs, which disrupted global supply chains in the long run and increased the burden of prices on American consumers. According to a 2024 analysis by the Peterson Institute for International Economics, Trump administration tariffs were estimated to have cost the average American household an additional $1,277 annually. The Democratic Party's internal conflicts became even more pronounced during the 2024 presidential election. The progressive left within the party demanded more radical policies such as the Green New Deal for climate crisis response, Medicare for All, and student loan forgiveness. This group, represented by Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez, argued that the Democratic Party should stand with workers and ordinary citizens, not the interests of corporations and the wealthy. Conversely, moderate Democratic lawmakers worried that such policies were fiscally unfeasible and could push moderate voters in swing states towards the Republican Party. Indeed, a 2025 Pew Research Center poll showed that only 38% of U.S. voters identified as 'liberal,' while 36% identified as 'moderate' and 26% as 'conservative.' This suggests that if the Democratic Party were to exclusively champion the demands of the progressive left, it risks losing the crucial moderate bloc. As Finkelstein pointed out in his VTDigger column, the Democratic Party's problems extend beyond economic policy to cultural issues. The stances taken by the progressive left on issues such as gender identity, Critical Race Theory, and Defund the Police were perceived as extreme by many moderate voters. These cultural wars provided an opportunity for the Republican Party to frame Democrats as the 'radical left,' and indeed, this became a major attack point for Republicans in the 2024 presidential election. Democratic Internal Conflict and Voter Ali