The Supreme Court agreed Friday to plunge into the abortion debate in the midst of the 2020 presidential campaign, taking on a Louisiana case that could reveal how willing the more conservative court is to chip away at abortion rights.

The justices will examine a Louisiana law requiring doctors who perform abortions to have admitting privileges at a nearby hospital. The law is virtually identical to one in Texas that the Supreme Court struck down in 2016, when Justice Anthony Kennedy was on the bench and before the addition of President Donald Trump’s two high court picks, Justices Neil Gorsuch and Brett Kavanaugh, who have shifted the court to the right.

The court’s new term begins Monday, but arguments in the Louisiana case won’t take place until the winter. A decision is likely to come by the end of June, four months before the presidential election.

The Supreme Court temporarily blocked the Louisiana law from taking effect in February, when Chief Justice John Roberts joined the court’s four liberal justices to put it on hold. Kavanaugh and Gorsuch were among the four conservatives who would have allowed the law to take effect.

Those preliminary votes do not bind the justices when they undertake a thorough review of an issue, but they often signal how a case will come out.

Roberts’ vote to block the Louisiana law was a rare vote against an abortion restriction in his more than 13 years as chief justice. That may reflect his new role since Kennedy’s retirement as the court’s swing justice, his concern about the court being perceived as a partisan institution and respect for a prior decision of the court, even one he disagreed with.

In the Texas case, he voted in dissent to uphold the admitting privileges requirement.

The Louisiana case and a separate appeal over an Indiana ultrasound requirement for women seeking an abortion, on which the court took no action Friday, were the most significant of hundreds of pending appeals the justices considered when they met in private on Tuesday.

Both cases involve the standard first laid out by the court in 1992 that while states can regulate abortion, they can’t do things that place an “undue burden” on a woman’s right to an abortion. The regulations are distinct from other state laws making their way through court challenges that would ban abortions early in a pregnancy.