(CNN) Jeb Bush said campaigning with his brother, former President George W. Bush, tomorrow could help save his presidential campaign.
Bush has increasingly turned to his famous family to help save his presidential campaign. He campaigned in New Hampshire with his mother, former first lady Barbara Bush.
Who's running for president?
Ted Cruz, Donald Trump, John Kasich, Hillary Clinton and Bernie Sanders,
Businessman Donald Trump
announced June 16 at his Trump Tower in New York City that he is seeking the Republican presidential nomination. This ends more than two decades of flirting with the idea of running for the White House.
"So, ladies and gentlemen, I am officially running for president of the United States, and we are going to make our country great again," Trump told the crowd at his announcement.
Sen. Ted Cruz of Texas has made a name for himself in the Senate, solidifying his brand as a conservative firebrand willing to take on the GOP's establishment. He
announced he was seeking the Republican presidential nomination in a speech on March 23.
"These are all of our stories," Cruz told the audience at Liberty University in Virginia. "These are who we are as Americans. And yet for so many Americans, the promise of America seems more and more distant."
Ohio Gov. John Kasich joined the Republican field July 21 as he formally announced his White House bid.
"I am here to ask you for your prayers, for your support ... because I have decided to run for president of the United States," Kasich told his kickoff rally at the Ohio State University.
Hillary Clinton
launched her presidential bid on April 12 through a video message on social media. The former first lady, senator and secretary of state is considered the front-runner among possible Democratic candidates.
"Everyday Americans need a champion, and I want to be that champion -- so you can do more than just get by -- you can get ahead. And stay ahead," she said in her announcement video. "Because when families are strong, America is strong. So I'm hitting the road to earn your vote, because it's your time. And I hope you'll join me on this journey."
Sen. Bernie Sanders, an independent from Vermont who caucuses with Democrats, announced his run in an email to supporters on April 30. He has said the United States needs a "political revolution" of working-class Americans to take back control of the government from billionaires.
"This great nation and its government belong to all of the people and not to a handful of billionaires, their super PACs and their lobbyists," Sanders said at a rally in Vermont on May 26.
But this will be his first campaign appearance with his brother, who left office in 2009 with poor approval ratings, but whose popularity has improved since then, particularly with conservatives.
Bush says Senate should reject an Obama Supreme Court nominee
Bush is hoping to gain more momentum after a fourth place finish in New Hampshire and he said now is the time, just before the South Carolina primary February 20.
"The point is, is he a popular Republican? You bet he is," Bush said of his brother. "And he will make the point ... that he knows what it takes to be president of the United States, to be commander-in-chief, to keep the country safe and that he believes that I have those skills based on my record and based on how he knows me, and that will be validator in South Carolina where values matter and where national defense matters a lot. So I'm looking forward to the event we should have a great crowd and it'll help my campaign a lot."