"We are not going to nominate someone to run against McCain who has not passed the commander-in-chief test and not passed the steward of the economy test," Wolfson said in a conference call with reporters.
The Obama campaign held a competing conference call Tuesday disputing Clinton's national security and foreign policy creditials, pointing to her vote to authorize President Bush to use force in Iraq.
On Tuesday the Clinton campaign accused the Obama campaign of election day chicanery in Texas, a charge the Obama campaign denied.
The Texas Democratic Party said they have received concerns from both the Clinton and Obama campaigns about the other side improperly padding their caucus vote totals by getting primary voters to fill out sign-in sheets all day long rather than waiting until the primary polls close and the caucus process formally gets underway, but Texas Democratic Party officials tell ABC News they do not have any proof of wrong-doing.
Some polling stations in Ohio stayed open later than expected because they ran out of ballots. Election officials in Texas and Ohio said voter turnout was high, depite rain, sleet, and flooding in some areas of Ohio.
After her wins in Ohio and Rhode Island Clinton appears ready to fight on, urging supporters to bolster her campaign warchest and donate money online.
Clinton will appear on network televsion news programs Wednesday morning.
The Democratic rivals battle next in Wyoming on March 8, where 12 delegates are at stake, and in Mississippi on March 11, with 33 delegates.
The next big prize is Pennsylvania on April 22 with 158 delegates up for grabs. Many believe that if no clear winner can be determined before the final primary vote is cast in June, the two historic, formidable candidates could fight all the way to the party's Denver convention in August.
ABC News' Kate Snow, David Chalian, Rick Klein, Eileen Murphy, Andrew Fies, Kevin Chupka, Karen Travers, Gary Langer, Teddy Davis, Eloise Harper, Lauren Pearle, and Sunlen Miller contributed reporting.