South Korea's Democratic Party and People Power Party are facing internal conflicts over electoral rules and policy directions this month [1].

These disputes threaten to destabilize party leadership and influence the outcome of upcoming candidate selections during a critical period of political realignment. The friction highlights deep-seated ideological divides within both the ruling and opposition blocs.

The Democratic Party is currently embroiled in a conflict over the "rule" of its upcoming national convention, specifically regarding the preferred-vote system [2]. This internal battle is intensifying as the party approaches its convention scheduled for Aug. 17, 2026 [1].

Disagreements center on how to implement the preferred-vote system and other reform proposals. These include the separation of investigation and indictment, and the abolition of supplementary investigation authority [2]. Party members are fighting for influence, as these rules will dictate how candidates are selected and who holds power within the organization.

Official candidate registration for the Democratic Party begins this Thursday [1]. The party is now roughly one month away from its Aug. 17 event [1].

Meanwhile, the People Power Party is experiencing its own "policy-line battle." Tensions have surfaced regarding "disciplinary politics," leading to visible friction between party leaders [1].

Reports indicate that Representative Jang Dong-hyuk and Floor Leader Jeong Jeom-sik have exhibited a lack of coordination, creating a perceived mismatch in the party's strategic direction [1]. This internal discord comes as the party attempts to maintain a unified front against the opposition.

Both parties are navigating these tensions at the National Assembly and within their respective convention venues as they prepare for the next phase of their leadership cycles [1].

The Democratic Party is entering a “rules war” over the preferred‑vote system.

The simultaneous instability in both major South Korean parties suggests a broader systemic struggle to modernize electoral processes and maintain party discipline. For the Democratic Party, the fight over the preferred-vote system is a proxy war for control over the party's future direction. For the People Power Party, the friction between leadership and floor managers indicates a fragility in their current governance strategy, potentially leaving them vulnerable to opposition gains if they cannot resolve their internal policy disputes.