According to the memo, Trump’s marks on both the economy and taxes have grown by double-digits over the past few months. Another poll released this week shows Republicans leading in the generic congressional ballot for the first time, largely due to the rise in popularity of the tax bill, forcing Democrats to reexamine their messaging in the coming months.

Republicans continue to see the bill as their saving grace in their push to keep hold of the House and, to a lesser extent the Senate. The American Action Network, an outside group with the backing of Speaker Paul Ryan, R-Wis., has pumped $29 million to back the bill, including over $5 million since it passed in mid-December. The Koch brothers have also spent $20 million, and plan to invest another $20 million to sell the law.