Between 2020 and 2024, The number of eligible Hispanic voters, which were 32 million or 13.5% of all eligible voters, will rise to 36 million.  All the increase in eligible voters in 2024 are non-white (Hispanic, Black and Asian).  Eligible white voters remain about the same as in 2020. (Go here.) The white share of eligible voters declined from about 82% in 2000 to about 74% in 2000. But since whites turn out to vote a lot more than other groups, its actual diminishment in electoral impact has not declined as much.

Hispanics, indeed, turn out to vote much less than whites. In 2020, 73% of eligible white voters voted, compared to 53% of eligible Hispanic voters. (Go here.)

If this ratio in voting patterns continues into 2024, the actual size of the Hispanic vote will be 19 million, and the white vote about 118 million.