The California Democratic Party endorsed Rep. Janice Hahn on Sunday, Roll Call has learned — a significant sign of support in her race against fellow Democratic Rep. Laura Richardson.

The official endorsement announcement was made at the state party’s annual convention in San Diego. The endorsement will be listed on the sample ballot that is sent to every registered Democrat in the 44th district ahead of the June jungle primary and November general election.

“The endorsement from the California Democratic Party is by far the most powerful and important endorsement any candidate could hope to achieve, and I plan to proudly carry the Party’s banner throughout my campaign and all the way back to Washington,” Hahn said in a statement.

Hahn, who won a special election in July, was forced into the redrawn 44th district in south Los Angeles after redistricting. Richardson’s district was split nearly in half, and she opted to run in this heavily Democratic district against Hahn.

Hahn won 79 percent of the 44th district delegate vote at a pre-endorsement conference on Jan. 22. Because she received more than 70 percent, Hahn’s endorsement was placed on the consent calendar on Sunday and approved by 3,000 delegates from across the state.

No endorsement was made in the other Member-vs.-Member race between Democratic Reps. Howard Berman and Brad Sherman in the redrawn 30th district.