The claim is true because the approved 2028 Democratic primary calendar places South Carolina and other early-contest states with significant Black, Latino, and organized-labor constituencies at the front of the nomination process.
The Democratic Party’s 2028 presidential primary calendar gives Black and Latino voters and union members an early say in the nomination process.

Who Wins (and Who Loses) in the Democrats’ New 2028 Primary Calendar? - The New York Times
Source: nytimes.com
Key Evidence
The New York Times reports that South Carolina’s majority-Black Democratic electorate gives Black voters greater influence at the beginning of the 2028 contest.
ABC News and Associated Press coverage state that the early calendar is designed to prioritize states and constituencies involving Black and Latino voters and union members.
Multiple outlets also identify South Carolina as the leadoff state, with Nevada in an early position.
What the Evidence Shows
The available evidence supports the claim within its stated scope. The Democratic Party approved a 2028 calendar that moves Iowa away from the traditional lead position and places South Carolina first, followed by Nevada. This gives candidates an early incentive to appeal to the voters and constituencies influential in those states.
The New York Times specifically reports that the calendar increases Black voters’ influence at the earliest stage because South Carolina’s Democratic primary electorate is majority Black, unlike the electorates historically associated with Iowa and New Hampshire. Coverage from ABC News and the Associated Press describes the early calendar as prioritizing Black and Latino voters and organized labor, requiring candidates to appeal to those groups early in the contest.
The wording describes an early say, not exclusive control over the nomination. The sources establish that these groups are strategically important in the opening contests, but they do not show that Black and Latino voters or union members alone determine the nominee. The calendar remains subject to the broader primary process and later voting by other states.