Final answer:
The primary difference between conservative and liberal opposition to the New Deal was that conservatives were concerned about government overreach, while liberals felt it did not sufficiently help the poor and was biased towards big business.
Step-by-step explanation:
The primary difference between conservative and liberal opposition to the New Deal lies in their fundamental beliefs about government's role in the economy and society. Conservatives opposed the New Deal primarily over concerns about government overreach, believing it involved too much interference in business and was leading to excessive national debt due to deficit spending. In contrast, liberals opposed the New Deal because they felt it did not do enough to help the poor and that it favored big business over smaller companies and consumers. Conservative opposition stressed the negative impact of high taxes and discouraged investment, while both the mainstream and far-left liberals believed the interventions either fell short or should have been more extensive toward a planned economy.