Why did supporters of the Second Bank seek a new charter before the existing charter had actually expired?

Supporters of the Second Bank sought a new charter before the existing one expired to ensure the institution's stability and continuity. They believed that renewing the charter early would solidify its role in stabilizing the nation's economy and managing the monetary system, especially amid growing opposition. By securing a new charter in advance, they aimed to preempt any potential challenges or political shifts that could jeopardize the bank's future operations.