Some Democratic presidential candidates have added their preferred gender pronouns to their social media accounts, which LGBTQ advocates say is a sign of solidarity with transgender and nonbinary people.

Massachusetts Sen. Elizabeth Warren, former Obama administration housing chief Julián Castro and New York City Mayor Bill de Blasio have added their pronouns to their Twitter pages. 

Warren's Twitter bio says "Wife, mom... grandmother, and Okie. She/her." Similarly, Castro's says he is a father, husband and Texan who's identified by he/him, and he even included his pronoun in Spanish, "Él."

Adding pronouns “is a best practice for all campaigns at every level,” Human Rights Campaign spokesperson Lucas Acosta told NBC News in an email.

"Stating your pronouns publicly as a cisgender ally sends a strong signal of support to the LGBTQ community but particularly transgender and non-binary people that they are seen, accepted and supported,” Acosta said.

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Warren campaign spokesperson Alexis Krieg said in a statement to NBC that the senator made the change to her profile because she's "committed to running an inclusive campaign, and wants every person to know that they are welcome in this movement.” 

As of Sunday night, Warren, Castro and de Blasio were the only candidates of the 20 who qualified for the next debate who had pronouns on their Twitter accounts.

The latest Tweets from Elizabeth Warren (@ewarren). U.S. Senator, former teacher, and candidate for president. Wife, mom (Amelia, Alex, Bailey, @CFPB), grandmother, and Okie. She/her. Official campaign account. Massachusetts
The latest Tweets from Julián Castro (@JulianCastro). Father, husband, Texan, presidential candidate. He/Him/Él. Former Sec. of Housing & Urban Development, Mayor of San Antonio. Text DEBATE to 45300 to join us!. San Antonio, TX
The latest Tweets from Bill de Blasio (@BilldeBlasio). Mayor of New York City and candidate for president. Fighting for working people no matter how much you make or where you live. He/him. Ads by de Blasio 2020. New York, NY

The second set of the race's debates will be held July 30 and 31 in Detroit on CNN.

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