Our study endeavors to explore potential avenues for cross-party collaboration within the National Assembly by examining policy preferences among legislators from different parties, identifying both areas of convergence and divergence. Our survey results reveal that a significant proportion of legislators from the two major parties share concerns over the pressing issues of rising in equality and political polarization. However, the Democratic Party of Korea and the People Power Party exhibit sharp partisan differences in their approaches to tackling these challenges. While both parties recognize the need for the National Assembly to address demographic change and an aging society, the Democratic Party of Korea leans towards supporting the expansion of immigration as a solution to population decline, while opinions within the People Power Party are divided. Furthermore, the Democratic Party of Korea prioritizes the energy transition and climate change as critical policy areas, whereas the People Power Party views deregulation as a means to advance science and technology.