Tamilaga Vettri Kazhagam (TVK) and AIADMK have made significant political gains in northern Tamil Nadu, challenging the DMK's dominance in Vellore, Ranipet, Tirupattur, and Tiruvannamalai districts. The development follows TVK founder C. Joseph Vijay's electoral success, which has indirectly boosted AIADMK's presence in the 21 Assembly constituencies that comprise the former North Arcot region.

The districts, long considered a DMK stronghold, have seen a shift in voter alignment, with AIADMK capitalizing on local dissatisfaction and TVK's campaign momentum. Sources within AIADMK confirm intensified grassroots outreach in the area since the May 2026 elections, citing increased support in rural and semi-urban segments.

Political observers note that the change reflects a broader realignment in Tamil Nadu's north, where traditional party loyalties are being tested. AIADMK leaders have scheduled a regional coordination meeting in Vellore on May 8 to assess expansion plans and consolidate emerging alliances.