THE race for the White House in 2016 could be a battle of the big hitters as Jeb Bush officially announced his candidacy for the Republican nomination.

It paves the way for a potential clash between brand Bush and brand Clinton, with former First Lady Hilary Clinton already in the running for the Democratic ticket.

If elected president, Mr Bush , 62, would be the third member of his family in less than 30 years to hold the office, following in the footsteps of his father George H. W. Bush and brother, George W. Bush.

Both presidencies were marked by US involvement in Iraq, with the senior Bush presiding over the Gulf War in 1990 and George W spearheading the controversial drive for regime change to oust his father's nemesis, Saddam Hussein, in the wake of the September 11 terrorist attacks.

Neither were present at the rally in Miami in Monday, when the former Governor of Florida finally declared his long-touted bid for the Republication nomination.

He said: "I will campaign as I would serve, going everywhere, speaking to everyone, keeping my word, facing the issues without flinching."

Addressing the audience in both English and Spanish, Mr Bush - whose wife is Mexican-born - said his message would be "an optimistic one".

"I am certain that we can make the decades just ahead in America the greatest time ever to be alive in this world," he said.

"We will take Washington - the static capital of this dynamic country - out of the business of causing problems. I will take nothing and no one for granted. I will run with heart. I will run to win."

Among Mr Bush's rivals for the Republican candidacy is Kentucky senator, Rand Paul, who said he would be up against a "Bush-Clinton fatigue" in the United States.

"I think some people have had enough Bushes and enough Clintons," said Mr Paul.

Meanwhile, Mark Meckler, a leader of the ultraconservative tea party movement, said Mr Bush's positions on education and immigration are "a non-starter with many conservatives".

In a campaign video unveiled on Monday featuring women, minorities and a disabled child, Mr Bush said society's most vulnerable "should be in the front of the line and not the back".