1. Home
  2. |Insights
  3. |About Face! Florida Supreme Court Adopts Daubert Standard— Seven Months After Rejecting It

About Face! Florida Supreme Court Adopts Daubert Standard— Seven Months After Rejecting It

Client Alert | 2 min read | 05.29.19

In a surprise reversal, the Florida Supreme Court last week adopted the state legislature’s 2017 “Daubert amendments,” replacing Frye with Daubert as the test for admissibility of expert testimony in the state’s trial courts.1 The decision comes just seven months after the court rejected the Daubert amendments as unconstitutional in DeLisle v. Crane Co.2 The switch is effective immediately.

When we wrote in our October 22, 2018 client alert that “the debate [in Florida] has come to an apparent end with the decision in DeLisle,3 little did we know how much the word “apparent” would matter. DeLisle was the “proper case or controversy” the Court had insisted was necessary to address the constitutional concerns it had raised about Daubert in a 2017 per curiam order.4 DeLisle held that the Daubert amendments were procedural, not substantive; as such, they could be enacted only by the Court itself.5 The Court declined to do so. “With our decision today,” said the Court, “we reaffirm that Frye, not Daubert, is the appropriate test in Florida courts.”6

But in its May 23 decision, the Court adopted, “according to its exclusive rulemaking authority,”7 the very same amendments it had rejected last October. Now, said the Court, “the ‘grave constitutional concerns’ raised by those who oppose the amendments to the Code appear unfounded[.]”8 Briefly addressing the merits of the two admissibility standards, the Court added that “the Daubert amendments remedy deficiencies of the Frye standard,” “will create consistency between the state and federal courts,” and will “help lessen forum shopping.”9

What changed in seven months? The composition of the Court. Since DeLisle, three of the judges in the 4-3 majority have retired. “Without now readdressing the correctness of this Court’s ruling in DeLisle…,”10 the three dissenters joined two new judges to form the majority in the May 23 per curiam order.

Have we reached the end of the long and winding road to Daubert in Florida? Perhaps. But the Court left an opening once more: “[W]e do not decide, in this rules case, the constitutional or other substantive concerns that have been raised about the amendments. Those issues must be left for a proper case or controversy.”11

1 In re: Amendments to the Florida Evidence Code (May 23, 2019).

2 No. SC16-2182 (October 15, 2018).

3 Client Alert, “Florida Supreme Court Rebuffs Legislature’s Mandate to Adopt Daubert Standard,” October 22, 2018. 

4 In re Amendments to the Florida Evidence Code, Order at 9 (Feb. 16, 2017).

5 DeLisle, slip op. at 7.

6 Id. at 19.

7 In re: Amendments to the Florida Evidence Code, Order at 1 (May 23, 2019).

8 Id. at 2.

9 Id. at 6.

10 Id. at 2.

11 Id. at 5.

Contacts

Insights

Client Alert | 5 min read | 12.12.25

Eleventh Circuit Hears Argument on False Claims Act Qui Tam Constitutionality

On the morning of December 12, 2025, the Eleventh Circuit heard argument in United States ex rel. Zafirov v. Florida Medical Associates, LLC, et al., No. 24-13581 (11th Cir. 2025). This case concerns the constitutionality of the False Claims Act (FCA) qui tam provisions and a groundbreaking September 2024 opinion in which the United States District Court for the Middle District of Florida held that the FCA’s qui tam provisions were unconstitutional under Article II. See United States ex rel. Zafirov v. Fla. Med. Assocs., LLC, 751 F. Supp. 3d 1293 (M.D. Fla. 2024). That decision, penned by District Judge Kathryn Kimball Mizelle, was the first success story for a legal theory that has been gaining steam ever since Justices Thomas, Barrett, and Kavanaugh indicated they would be willing to consider arguments about the constitutionality of the qui tam provisions in U.S. ex rel. Polansky v. Exec. Health Res., 599 U.S. 419 (2023). In her opinion, Judge Mizelle held (1) qui tam relators are officers of the U.S. who must be appointed under the Appointments Clause; and (2) historical practice treating qui tam and similar relators as less than “officers” for constitutional purposes was not enough to save the qui tam provisions from the fundamental Article II infirmity the court identified. That ruling was appealed and, after full briefing, including by the government and a bevy of amici, the litigants stepped up to the plate this morning for oral argument....