MADISON, Wis. — Liberals who control the Wisconsin Supreme Court signaled Monday that they were prepared to overturn a two-year-old decision that banned absentee ballot drop boxes and allow them for the 2024 election.

The justices’ comments during oral arguments offered the latest sign that the liberal majority is prepared to act boldly and swiftly to change policies the conservatives put in place during their 15 years controlling the court in one of the country’s most important swing states. In December, the court struck down a redistricting plan that had helped Republicans maintain their lock on the state legislature.