Unlike Washington's last fiscal crisis earlier this year, a government shutdown wouldn't risk a US default.
Two-thirds of survey respondents anticipated a downturn in the world's biggest economy by the end of next year.
Investors will be looking for signs of Schwab's longer-term prognosis when it reports earnings on Monday.
As the banking crisis drags on, investors are starting to unearth risks at Schwab that have been hiding in plain sight.
Dropping balances in 401(k)s and IRAs have only just begun to surface as a concern among swing voters.
The Fed chair believes the central bank has plenty of room to aggressively jack up rates.