Beto O'Rourke, a former congressman from El Paso, Texas, launched his presidential campaign in March and promised "the largest grassroots campaign this country has ever seen."

But that is all coming to an end.

"Though it is difficult to accept, it is clear to me now that this campaign does not have the means to move forward successfully," he announced on his Twitter account on November 1. "My service to the country will not be as a candidate or as the nominee."

O'Rourke rose to Democratic stardom in 2018 while challenging for the US Senate seat held by Ted Cruz. He lost the race by less than 3 percentage points, finishing closer than many other Democrats have finished in a state that's long been a GOP stronghold. And he shattered fundraising records along the way, ending with an $80 million haul.

O'Rourke, right, was born Robert Francis O'Rourke on September 26, 1972. His nickname Beto -- a shortened version of Roberto -- was given to him by his parents, Patrick and Melissa. Patrick O'Rourke served as a county commissioner and a county judge. Melissa O'Rourke was a furniture store owner.
O'Rourke, right, was born Robert Francis O'Rourke on September 26, 1972. His nickname Beto -- a shortened version of Roberto -- was given to him by his parents, Patrick and Melissa. Patrick O'Rourke served as a county commissioner and a county judge. Melissa O'Rourke was a furniture store owner.
Facebook from Beto O'Rourke
O'Rourke<a href="index.php?page=&url=https%3A%2F%2Fwww.facebook.com%2Fbetoorourke%2Fphotos%2Fa.231016396948078%2F1335650959817944%2F%3Ftype%3D3%26theater" target="_blank" target="_blank"> posted this old photo</a> of him and his father in 2017. O'Rourke has two younger sisters, Erin and Charlotte.
O'Rourke posted this old photo of him and his father in 2017. O'Rourke has two younger sisters, Erin and Charlotte.
Facebook
While he was in college in the early 1990s, O'Rourke was a member of two punk-rock bands. He played guitar for the band known as Foss, which released an EP called "The El Paso Pussycats." O'Rourke, left, also played with a band called the Sheeps, who wore sheep masks and long johns during performances. He graduated from Columbia University in 1995.
While he was in college in the early 1990s, O'Rourke was a member of two punk-rock bands. He played guitar for the band known as Foss, which released an EP called "The El Paso Pussycats." O'Rourke, left, also played with a band called the Sheeps, who wore sheep masks and long johns during performances. He graduated from Columbia University in 1995.
In September 1998, O'Rourke was arrested and charged with driving while intoxicated. The charges were dismissed after he completed a diversion program. He later referred to the incident as a terrible mistake. "I have owned up to it and I have taken responsibility for it," he told the El Paso Times in 2005.
In September 1998, O'Rourke was arrested and charged with driving while intoxicated. The charges were dismissed after he completed a diversion program. He later referred to the incident as a terrible mistake. "I have owned up to it and I have taken responsibility for it," he told the El Paso Times in 2005.
Texas Department of Criminal Justice/Getty Images
O'Rourke and his wife, Amy. The two married in 2005 and have three children together: Henry, Molly and Ulysses.
O'Rourke and his wife, Amy. The two married in 2005 and have three children together: Henry, Molly and Ulysses.
Melissa O'Rourke/AP
O'Rourke and members of his family pose for a photo with House Speaker John Boehner after O'Rourke was sworn into Congress in January 2013. O'Rourke started his political career in 2005, when he was elected to the El Paso City Council.
O'Rourke and members of his family pose for a photo with House Speaker John Boehner after O'Rourke was sworn into Congress in January 2013. O'Rourke started his political career in 2005, when he was elected to the El Paso City Council.
J. Scott Applewhite/AP
O'Rourke meets with campaign volunteers in February 2013. He served Texas's 16th District for three terms.
O'Rourke meets with campaign volunteers in February 2013. He served Texas's 16th District for three terms.
MANDEL NGAN/AFP/Getty Images
O'Rourke and his wife sit with their son Ulysses as they watch their daughter, Molly, play volleyball in February 2017.
O'Rourke and his wife sit with their son Ulysses as they watch their daughter, Molly, play volleyball in February 2017.
Ivan/Pierre Aguirre/Getty Images
O'Rourke meets with supporters following a speech in Austin, Texas, in April 2017. O'Rourke announced that he would not be seeking re-election in 2018, choosing instead to run for the US Senate seat held by Republican Ted Cruz.
O'Rourke meets with supporters following a speech in Austin, Texas, in April 2017. O'Rourke announced that he would not be seeking re-election in 2018, choosing instead to run for the US Senate seat held by Republican Ted Cruz.
Drew Anthony Smith/Getty Images
O'Rourke talks to his wife from a hotel room in Bay City, Texas, in February 2018.
O'Rourke talks to his wife from a hotel room in Bay City, Texas, in February 2018.
Tamir Kalifa/The New York Times
O'Rourke plays in a fundraiser baseball game in April 2018.
O'Rourke plays in a fundraiser baseball game in April 2018.
Drew Anthony Smith/Getty Images
O'Rourke performs with Micah Nelson, left, and Ray Benson during the 45th annual Willie Nelson 4th of July Picnic in July 2018.
O'Rourke performs with Micah Nelson, left, and Ray Benson during the 45th annual Willie Nelson 4th of July Picnic in July 2018.
Rick Kern/WireImage/Getty Images
Vicente Bonilla, 4, dances at an O'Rourke rally in Fort Worth, Texas, in August 2018. O'Rourke, who speaks fluent Spanish, was meeting with supporters at an event called Musica con Beto (Music With Beto).
Vicente Bonilla, 4, dances at an O'Rourke rally in Fort Worth, Texas, in August 2018. O'Rourke, who speaks fluent Spanish, was meeting with supporters at an event called Musica con Beto (Music With Beto).
Ian McVeal/Getty Images
O'Rourke shakes hands with US Sen. Ted Cruz at a debate in Dallas in September 2018.
O'Rourke shakes hands with US Sen. Ted Cruz at a debate in Dallas in September 2018.
Tom Fox/Pool/Getty Images
O'Rourke signs a note for a supporter after a campaign rally in Fort Worth in October 2018. It reads: "Dear Linda! Keep the faith!"
O'Rourke signs a note for a supporter after a campaign rally in Fort Worth in October 2018. It reads: "Dear Linda! Keep the faith!"
LOREN ELLIOTT/AFP/Getty Images
O'Rourke tries to cheer up a crying baby at a campaign rally in Conroe, Texas, in October 2018.
O'Rourke tries to cheer up a crying baby at a campaign rally in Conroe, Texas, in October 2018.
Loren Elliott/Getty Images
The O'Rourkes walk home after voting in El Paso in November 2018.
The O'Rourkes walk home after voting in El Paso in November 2018.
Chip Somodevilla/Getty Images
O'Rourke concedes the race to Cruz on Election Day.
O'Rourke concedes the race to Cruz on Election Day.
Chip Somodevilla/Getty Images
A campaign poster for O'Rourke is displayed in a store window in Santa Fe, New Mexico, in January 2019. It was a couple of months before O'Rourke confirmed that he would be running for president.
A campaign poster for O'Rourke is displayed in a store window in Santa Fe, New Mexico, in January 2019. It was a couple of months before O'Rourke confirmed that he would be running for president.
Robert Alexander/Getty Images
While at the dentist in January 2019, O'Rourke <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2019%2F01%2F10%2Fpolitics%2Fbeto-orourke-dentist-instagram%2Findex.html" target="_blank">posted video to Instagram.</a> "We're going to continue our series on the people of the border," he said, introducing his dental hygienist Diana and saying she was "going to tell us a little bit about growing up in El Paso." Diana explained that her mother was from Mexico and her father was from the United States. She said she was born in El Paso and that her neighborhood helped her mother study to become a US citizen.
While at the dentist in January 2019, O'Rourke posted video to Instagram. "We're going to continue our series on the people of the border," he said, introducing his dental hygienist Diana and saying she was "going to tell us a little bit about growing up in El Paso." Diana explained that her mother was from Mexico and her father was from the United States. She said she was born in El Paso and that her neighborhood helped her mother study to become a US citizen.
Instagram/Beto O'Rourke
O'Rourke talks with Oprah Winfrey at an event in New York in February 2019.
O'Rourke talks with Oprah Winfrey at an event in New York in February 2019.
Kathy Willens/AP
O'Rourke speaks to residents of Burlington, Iowa, during a meet-and-greet event at the Beancounter Coffeehouse & Drinkery in March 2019. O'Rourke announced that day that he would be running for president.
O'Rourke speaks to residents of Burlington, Iowa, during a meet-and-greet event at the Beancounter Coffeehouse & Drinkery in March 2019. O'Rourke announced that day that he would be running for president.
Charlie Neibergall/AP
O'Rourke is reflected in a supporter's sunglasses as he speaks during a campaign rally in El Paso in March 2019.
O'Rourke is reflected in a supporter's sunglasses as he speaks during a campaign rally in El Paso in March 2019.
Justin Sullivan/Getty Images
O'Rourke speaks to people in Des Moines, Iowa, during his CNN town-hall event in May 2019.
O'Rourke speaks to people in Des Moines, Iowa, during his CNN town-hall event in May 2019.
Edward M. Pio Roda/CNN
O'Rourke gives a thumbs-up before the start of the first Democratic debates in June 2019. With him, from left, are US Sens. Cory Booker, Elizabeth Warren and Amy Klobuchar.
O'Rourke gives a thumbs-up before the start of the first Democratic debates in June 2019. With him, from left, are US Sens. Cory Booker, Elizabeth Warren and Amy Klobuchar.
Jim Watson/AFP/Getty Images
O'Rourke speaks to the media after a mass shooting in El Paso in August 2019. <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2019%2F08%2F05%2Fpolitics%2Fbeto-orourke-donald-trump-mass-shootings%2Findex.html" target="_blank">O'Rourke lashed out at President Trump during his comments,</a> saying that Trump has been "promoting racism" with his incendiary remarks about immigration. Trump called the El Paso tragedy an "act of cowardice" and said there "are no reasons or excuses that will ever justify killing people."
O'Rourke speaks to the media after a mass shooting in El Paso in August 2019. O'Rourke lashed out at President Trump during his comments, saying that Trump has been "promoting racism" with his incendiary remarks about immigration. Trump called the El Paso tragedy an "act of cowardice" and said there "are no reasons or excuses that will ever justify killing people."
Andres Leighton/AP