ENTERTAINMENT NEWS - Nixon, who played Miranda Hobbs on the HBO series, plans to challenge incumbent Governor Andrew Cuomo for the Democratic party nomination.
The actress announced her plans to challenge the incumbent governor on Twitter on Monday.
The 51-year-old liberal activist, who had long been tipped to run, has never held elected office.
Who is Cynthia Nixon?
Ms Nixon played a career-oriented lawyer from 1998-2004 on television show Sex and the City. She won an Emmy for her work in 2004.
It was presented to her by another television celebrity - Donald Trump, whose presidency she has recently railed against.
Ms Nixon married her wife Christine Marinoni in 2012.
Ms Marinoni, an LGBTQ advocate, worked for Democratic New York City Mayor Bill de Blasio until she resigned a month ago.
The couple both contributed financially to his mayoral race.