Southern Gyeonggi Province is becoming a key swing region in the June 3 by-elections, as a semiconductor boom and a wave of younger voters redraw the politics of a region once seen as conservative-leaning. Southern constituencies in the province are home to South Korea’s expanding chip mega-cluster, anchored by Samsung Electronics and SK hynix, and have experienced rapid industrial growth, new-town development and an influx of voters in their 30s and 40s. The region also carries outsized symboli