As the United States goes to polls Tuesday, Democrat Hillary Clinton and Republican Donald Trump have ramped up their drive to enlist the support of as many voters as possible. In order to woo the younger crowds, the Clinton campaign fielded musician Katy Perry in the key battleground state of Pennsylvania on Saturday.

Perry is the latest in the string of celebrities who have backed the former secretary of state at her campaign rallies. Trump, however, has been critical of Clinton’s approach and told a rally in Hershey, Pennsylvania, on Friday: “By the way, I didn't have to bring J. Lo or Jay Z — the only way she gets anybody.”

Trump added: “I am here all by myself. Just me. No guitar, no piano, no nothing.”

However, Clinton’s efforts may be working for her as recent polls show her taking a lead against the real estate mogul. Here is a list of celebrities who have either already supported the Democratic presidential nominee or are scheduled to do so:

Jennifer Lopez And Marc Anthony

In October, Clinton received endorsement from pop star Jennifer Lopez and her ex-husband Marc Anthony in the key swing state of Florida.

“We’re at a crossroads, and we have to take the right road to the future, and we have the perfect person to take us there,” Lopez said, adding: “We’re about to have our first woman president, and it is my honor to introduce her to you tonight.”    

j lo clinton U.S. Democratic presidential nominee Hillary Clinton joins performers Jennifer Lopez and Marc Anthony at a campaign concert in Miami, Florida, Oct. 29, 2016. Photo: REUTERS/Brian Snyder

Jay Z And Beyoncé

Pop idol Beyoncé and husband Jay Z headlined Clinton’s Cleveland concert, in an attempt to bring out the star power in the crucial swing state.

“I want my daughter to grow up seeing a women lead our country and knowing that her possibilities are limitless,” said Beyoncé, whose performance was a surprise and had not been announced earlier. “And that's why I am with her.”   

beyonce jay z U.S. Democratic presidential nominee Hillary Clinton joins Jay Z and Beyoncé onstage at a campaign concert in Cleveland, Ohio, Nov. 4, 2016. Photo: REUTERS/Brian Snyder

Stevie Wonder

The music aficionado performed at a pop-up concert in support of Clinton, at Coda, a dance club in Philadelphia on Friday.

“I’ve had a chance to get to know her in her heart,” Wonder said of the Democratic nominee at the "Get Out the Vote" pep rally. He also went on to refer to her rival and Republican nominee Trump as “a reality-show star who is not showing reality.”   

stevie wonder Stevie Wonder attends the 2016 MusiCares Person of the Year gala in Los Angeles, Feb. 13, 2016. Photo: REUTERS/Phil McCarten

Katy Perry

The popular youth icon joined Clinton at a free concert and rally at the Mann Center, in West Fairmount Park, Philadelphia, showing her support for the Democrat and her bid for presidency.

“I admire so many things about Hilly C,” Perry said at the concert. “I agree with so many of her informed, educated policies. ... And no matter who you are or where you come from, she will be a president for all of us.”

The “Roar” artist was joined on stage by television producer Shonda Rhimes and New Jersey Sen. Cory Booker.

Jon Bon Jovi

Clinton’s campaign brought Jon Bon Jovi to a “Get Out the Vote” event in St. Petersburg, Florida, on Saturday. The singer joined Clinton's running mate, Sen. Tim Kaine, to provide voters a final push to go out and vote.

Bon Jovi will also be performing at a rally in Philadelphia on Monday evening, which will see President Barack Obama, first lady Michelle Obama, former President Bill Clinton and Clintons' daughter, Chelsea, joining the Democratic nominee on the night before the election.

bon jovi clinton Singer Jon Bon Jovi performs during the Clinton Global Citizen Award in New York, Sept. 19, 2016. Photo: REUTERS/Eduardo Munoz

LeBron James

The Cleveland Cavaliers star endorsed the Democratic nominee in an op-ed last month and is scheduled to campaign alongside Clinton in Cleveland on Sunday.

James’ presence at Clinton’s event just two days before Election Day may provide the Democrats the push they need in the swing state of Ohio. According to a recent poll, the Republican nominee is leading in the state and hopes to maintain the upper hand.

lebron james Cleveland Cavaliers forward LeBron James looks on from the sidelines against the Atlanta Hawks in the first quarter at Philips Arena. Photo: Brett Davis-USA TODAY Sports

Clinton has received support from a number of other popular names. Her “Stronger Together” fundraising event boasted of appearances and performances by Hugh Jackman, Emily Blunt, Jon Hamm, Jake Gyllenhaal, Sarah Jessica Parker, Helen Mirren, Julia Roberts, Lena Dunham and Neil Patrick Harris. The Democrat has also been spotted with singer Pharrell Williams and had Miley Cyrus do some door-to-door campaigning for her.