Sen. Clinton sent this e-mail out just about an hour ago:
On Saturday, I will extend my congratulations to Senator Obama and my support for his candidacy. This has been a long and hard-fought campaign, but as I have always said, my differences with Senator Obama are small compared to the differences we have with Senator McCain and the Republicans.
I have said throughout the campaign that I would strongly support Senator Obama if he were the Democratic Party's nominee, and I intend to deliver on that promise.
When I decided to run for president, I knew exactly why I was getting into this race: to work hard every day for the millions of Americans who need a voice in the White House.
I made you -- and everyone who supported me -- a promise: to stand up for our shared values and to never back down. I'm going to keep that promise today, tomorrow, and for the rest of my life.
I will be speaking on Saturday about how together we can rally the party behind Senator Obama. The stakes are too high and the task before us too important to do otherwise.