(CNN) - Rick Santorum's campaign is again trying to push back on the narrative that Mitt Romney basically has the Republican nomination fight sewn up. However, some of its assumptions are being met with derision by Republican officials.

In a new memo, obtained by CNN Chief Political Analyst Gloria Borger, the campaign's delegate strategist John Yob maintained that several factors are not being accurately reported that will help Santorum in the hunt for the 1,144 delegates needed to clinch the Republican presidential nomination.
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