Washington, Nov. 4 -- It was a mixed election night for Indian-American candidates on Tuesday, with Democrats securing key victories even as prominent Republican candidates such as Vivek Ramaswamy were defeated, as a Democratic wave swept key battlegrounds.

Pia Dandiya, an educator, won the House of Representatives seat from Florida's 22nd Congressional District, defeating her Republican rival, Casey Askar, 51.9% to 48.1% with 99% of the vote counted. Dandiya's victory, which will expand the "Samosa Caucus"-a group of congressional representatives of Indian origin-came as part of a broader trend in which Democratic candidates won despite recent Republican efforts to redraw Florida's congressional boundaries.

Indian-American doctor-turne...