Sen. Joe Lieberman, D-Conn., on Monday endorsed Sen. John McCain, R-Ariz., for president. McCain's campaign office released the following statement from Lieberman, who ran an independent campaign to win his re-election in 2006, but caucuses with Democrats.

LIEBERMAN: I have come to New Hampshire this morning to ask Republican and Independent voters to support John McCain in the first-in-the-nation primary on January 8.

I know that it is unusual for someone who is not a Republican to endorse a Republican candidate for President. And if this were an ordinary time and an ordinary election, I probably would not be here today. But this is no ordinary time — and this is no ordinary election — and John McCain is no ordinary candidate.

In this critical election, no one should let party lines be a barrier to choosing the person we believe is best qualified to lead our nation forward. The problems that confront us are too great, the threats we face too real, and the opportunities we have too exciting for us to play partisan politics with the Presidency.

We desperately need our next President to break through the reflexive partisanship that is poisoning our politics and stopping us from getting things done. We need a President who can reunite our country, restore faith in our government, and rebuild confidence in America's future.

My friend John McCain is that candidate, and that is why I am so proud to be standing by his side today.

I have worked closely with John for many years on many issues — from stopping genocide in the Balkans to combating global warming to creating the 9/11 Commission and enacting its recommendations into law. I have seen John, time and again, rise above the negativism and smallness of our politics to get things done for this country we love so much. I have watched him, time and again, work across party lines to make our country safer and stronger.

John McCain has proven that we can trust him to do what is right for our country, not only when it is easy, but when it is hard; to do what is necessary, not only when it is popular, but when it is not; and to tell us the truth, not only when it is easy to hear, but when it is not.

As President, John McCain will bring America together again. He will inspire a new American unity and a new American patriotism. He will push all of us to work together to solve our biggest problems, and defeat our most dangerous enemies.

Throughout our history, succeeding generations of brave Americans have risked their lives for the cause of freedom — which is America's cause. Throughout his career, from the ranks of the military to halls of the Congress, John McCain has made freedom's cause his own. He learned the ideals of patriotism and service from his father, he taught them to his sons, and he will hold those ideals high as an inspiration for all Americans.

When it comes to keeping America safe in this time of war, John has proven that he has the experience, the strength, and the character, to be our commander-in-chief from day one. I have traveled the world with John, so I can tell you how much he is liked and admired by leaders across the globe. He will be a President our friends will respect and our enemies will fear, and a President who will lead our nation on the world stage with purpose and principle.

When others were silent, and it was thought politically unpopular, John had the courage and common sense to sound the alarm about the mistakes we were making in Iraq and to call for more troops and a new strategy there. And when others waivered, when others wanted to retreat from the field of battle, John had the courage and the common sense to stand against the tide of public opinion and support the surge in Iraq, where we are at last winning.

You may not agree with John McCain on every issue, but you can always count on him to be honest with you about where he stands, you can always count on him to stand for what he believes is right for our country — regardless of pressure from politicians or vested interests. And you can count on him to be restless in pursuit of progress. In that sense, John McCain is the real change candidate in this race for the Presidency.

There are many fine people running for President. Many of them are good friends of mine. But I have concluded — and I hope you will, as well — that John McCain is the candidate who can best reunite our country and lead us to victory in the war against Islamist terrorism.

The nomination for President remains wide open, so on January 8th, New Hampshire's voters can — and I hope will — make history and send John McCain from the Granite State to victory.

Thank you.