Fewer younger voters everywhere are registering as Democrats.
Voters who were eligible to vote in the general election but were unregistered or registered with another party could register as Democrats at the caucus.
Among its objectives is getting one million young African-Americans to register as Democrats and to vote in the next presidential election.
Among those who said they were registered as Democrats, the poll had a margin of sampling error of plus or minus five percentage points.
They can register as Republicans or Democrats by noon tomorrow, in person, before their local registrar of voters.
She said some Republicans also fear that many of the people who use state social service agencies are likely to register as Democrats.
He found that all but three of them were registered as Democrats.
As of 2000 about 55 percent of Oklahoma voters registered as Democrats.
On election eve, there were 141,006 Republicans registered in the county, as opposed to only 27,184 Democrats.
Although more people are registered as Democrats than as Republicans, the largest group is unaffiliated voters.