The focus of this question is the Democrats' perspective on how the younger generation will affect their party's future victories. The correct answer is based on the information that Democrats believe the younger generation will give them an unending string of victories. Option A is incorrect because it suggests a lack of support from the younger generation, which is not the Democrats' belief. Option C is incorrect because it suggests a shift to the GOP, which contradicts the given information. Option D is incorrect because it implies a lack of interest in voting, which is not the Democrats' expectation.