Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.) has added her preferred gender pronouns to her presidential campaign's official Twitter account.

As of Friday morning, Warren's bio on the website read, "U.S. Senator, former teacher, and candidate for president. Wife, mom...grandmother, and Okie. She/hers. Official campaign account."

Her official Senate account did not appear to list gender pronouns.

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Fellow 2020 Democratic candidates Julián Castro and Bill de Blasio Bill de BlasioOVERNIGHT ENERGY: California seeks to sell only electric cars by 2035 | EPA threatens to close New York City office after Trump threats to 'anarchist' cities | House energy package sparks criticism from left and right EPA threatens to close New York City office after Trump threats to 'anarchist' cities New Year's Eve in Times Square to be largely virtual amid pandemic MORE have also listed gender pronouns in their bios. De Blasio, the mayor of New York City, listed "He/him," while Castro, a former Housing and Urban Development secretary, listed "He/Him/Él," including the Spanish word for "he" and "him."

The three candidates are among more than two dozen vying for the 2020 Democratic presidential nomination. Warren has seen spiking polling numbers in recent months and is increasingly seen as a top contender.