I wish you were correct that people act on their deepest moral beliefs. The contradiction is in their mandate for a position which only promotes increased waste and higher tax on some. IMHO the House republicans should let the consequences explain their point.
Had the House republicans done nothing to extend the Bush tax rates, 2012 election would have had a different outcome. We could have had a powerful campaign of lowering the tax rates, across the board, the economy would have been tighter and the people would have voted with their pocketbooks.