This story has been updated.
CHAPPAQUA, N.Y. -- Chappaqua resident Hillary Clinton formally announced she will run for president in 2016 on Sunday in a two-minute video released at 3 p.m. on hillaryclinton.com.
The video mostly shows everyday Americans expressing their hopes and goals for the future.
More than a minute into the video, Clinton appears on camera and says, "I'm getting ready to do something too. I'm running for president."
You can watch the video here.
Shortly after the video was released, the announcement was posted on a newly designed Twitter account @hillaryclinton .
"I'm running for president," the tweet, posted at 3:29 p.m., read. "Everyday Americans need a champion, and I want to be that champion."
The video was completed last week and interviews were done at various sites, including New York, as well as Iowa and New Hampshire, two of the first states to hold primaries or caucuses in 2016.
Sleepy Hollow High School principal Carol Conklin-Spillane is among one of the "real people" in the video, discussing her plans to "retire soon."
If Clinton wins the Democratic nomination and the November 2016 general election, she will be the first female president in U.S. history.
She is expected to start campaigning on Tuesday with a trip to Iowa, followed by a trip to New Hampshire.
The formal announcement became little more than a formality after she signed a lease to have her campaign headquarters in Brooklyn last week. Once the lease was signed, Federal Election Commission guidelines state the former Secretary of State had 15 days to make her campaign official.
Clinton moved to Chappaqua with her husband and former President Bill Clinton not long after his second term concluded. Bill Clinton was not shown in the video announcing Hillary Clinton's candidacy.
Hillary Clinton became the first female senator of New York in 2000, and was reelected in 2006.
In 2008, Clinton sought the Democratic nomination for president, but lost to Barack Obama, who later appointed her to Secretary of State. Clinton served in the capacity until 2013.
Since then, Clinton has remained in the headlines including a recent House Committee investigation into her use of a personal email address while conducting government business as Secretary of State.
Clinton is the third major political player to announce a run for the Oval Office. Texas Republican Sen. Ted Cruz formally announced his candidacy earlier in the month and Kentucky Republican Sen. Rand Paul announced on Tuesday.
Clinton's announcement drew quick reaction from two Democratic members of Congress whose districts include Westchester.
“It has been my great honor to call Hillary Clinton my friend and constituent, Senator, and Secretary of State," Rep. Nita Lowey said in a statement. "I will work hard to ensure that in two years, we call her 'Madam President.' "
Rep. Sean Patrick Maloney also expressed his support.
"For almost 25 years, I've watched Hillary go to bat for all Americans - no matter who they are or who they love," Maloney said in a statement. "I'm looking forward to hearing her plans to help hardworking families get ahead and stay ahead."
Prior to Clinton's 2008 ru, the last Westchester resident to run for president was Samuel Tilden of Yonkers, who lost in the Electoral College to Rutherford B. Hayes in 1876 despite winning the popular vote.
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