The Kifaya movement brought together leftist, rightist and centrist political organizations behind the idea that it was time for Mr. Mubarak to turn over the reins of power.

The event will not be a White House production but rather a political one, organized by the Democratic Leadership Council, the centrist organization that Mr. Clinton once led.

This centrist organization professes to offer common-sense approaches to government, rather than ideology.

"I'm sort of a Ripon Republican," referring to the centrist organization.

On the Republican side of the aisle another centrist organization was founded by moderate and some left of center Republicans with the same purpose for the Republican Party.

Mr. Gore was addressing his ideological soul mates here at a convention of the Democratic Leadership Council, the centrist organization that he helped found 15 years ago.

By contrast, Mr. Gore reached toward the political center with his selection of Mr. Lieberman, the chairman of the party's leading centrist organization, the Democratic Leadership Council.

At 23, he edited a big-thought magazine for the Democratic Leadership Council, the party's leading centrist organization.

But Mr. Aznar, who has worked hard to sell his party as a centrist organization, also reached out to mend fences.

In 2007 he was elected to co-chair the Republican "The Tuesday Group," a centrist organization of Congressional Republicans.