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Democratic Party leaders say they are better prepared for the November election than their party has been in years. At a gathering for donors Sunday, DNC Chairman Howard Dean explained the party's new bullishness.

Dean said Democrats now have the same data resources as the Republican Party, something that has not been the case for 15 years. The party has 250 million names in a database, where the party can predict with 85 percent accuracy how those people will vote. A subset of that are the 35 million people who voted for Democrats in 2008's primaries and caucuses.

Dean predicted the party would win seats in Congress in some former Republican-majority states, saying Democratic candidates were ahead in Alaska, Washington, Oregon, Nevada, South Carolina and New Mexico.

"You helped us put in place the business plan to win elections," Dean said. "This is the party that is going to win a lot of elections."