参议院今年会变蓝吗？ Democrats have an 75% chance of winning the Senate and 80% chance of getting 48 to 55 seats, according to FiveThirtyEight data. The degree of fiscal stimulus after the election depends largely on which party controls, Bloomberg Intelligence said. A Democratic sweep would open the door to a larger aid package. A Republican hold — even if Joe Biden wins the presidency — may close it.