Mr. Rangaswami, who attended the Houston rally and is registered as an independent, said the audience appeared to consist largely of older Indian-Americans, who he said leaned conservative and most likely voted for Mr. Trump in 2016.
That Indian-American voters lean liberal over all is partly because a younger generation, born in the United States, is far less convinced by the conservative cultural mores brought by their parents and grandparents from India, Mr. Rangaswami said.
“There’s definitely that schism in the Indian-American community,” said Raj Bhutoria, 20, a junior at Claremont McKenna College in Claremont, Calif., who has dreamed of running for office since working as a volunteer on the successful 2016 campaign of Representative Ro Khanna, Democrat of California and an Indian-American.
Mr. Khanna’s victory and Ms. Harris’s nomination show that “now being Indian is no longer a barrier to run for office or get elected,” Mr. Bhutoria said.
Despite wishing that the Democratic nominees were more progressive on some issues, Mr. Bhutoria said he was supporting them — though with perhaps less gusto than his parents, Ajay and Vinita Bhutoria, Bay Area tech entrepreneurs in their 40s who, as avowed liberals, are somewhat of an exception for their generation. They have starred in three ads supporting the Biden-Harris campaign, set to Bollywood music and featuring slogans in a variety of Indian languages.
Mr. Bhutoria cited Mr. Trump’s trade disputes with India, pressure on countries not to trade with Iran — an important source of cheap oil for India — and the suspension of H-1B visas for high-skilled workers, a large number of which go to Indians.
“The ‘Howdy, Modi’ event was wonderful to look at, but they were only beautiful picture moments,” he said. “Trump has not done much for India or Indians-Americans.”