FILE - In this Jan. 8, 2019, file photo, former felon Yolanda Wilcox, left, fills out a voter registration form as her best…
FILE - Former felon Yolanda Wilcox, left, fills out a voter registration form as her friend Gale Buswell looks on at the Supervisor of Elections office in Orlando, Fla., Jan. 8, 2019.

WASHINGTON - The U.S. Supreme Court on Thursday rebuffed a bid by voting rights advocates to block a Republican-backed Florida law mandating that people with past felony convictions pay court fines and fees before being able to register to vote.

The high court left in place a July 1 decision by the Atlanta-based 11th U.S. Circuit Court of Appeals to put on hold a judge's earlier ruling declaring the law an "unconstitutional pay-to-vote system" imposed on citizens who genuinely cannot pay — or even know if anything is owed.

U.S. District Judge Robert Hinkle's ruling had cleared the way for potentially hundreds of thousands of Floridians to register to vote in the key election battleground state ahead of the November 3 election in which President Donald Trump is seeking a second term in office.

Associate Justices Sonia Sotomayor, Ruth Bader Ginsburg and Elena Kagan dissented from Thursday's decision. Sotomayor wrote that the Supreme Court's action prevented thousands of otherwise eligible voters from casting ballots "simply because they are poor," adding that the decision "continues a trend of condoning disfranchisement."

The law was signed last year by Republican Governor Ron DeSantis, a Trump ally. Voting rights advocates and Democrats have accused Republicans in several states of passing laws aimed at suppressing the voting ability of groups who tend to support Democratic candidates.

The 11th Circuit decision effectively halted the voter registration of former felons who cannot afford to pay the fines and fees as required under the law to have their voting rights restored.

Governor is sued

A group of Floridians and voting rights organizations sued DeSantis, arguing the law amounted to an illegal poll tax in violation of the U.S. Constitution's guarantee of equal protection under the law.

Opponents argued the law goes against the wishes of Florida voters who approved an amendment to the state's constitution in 2018 to grant voting rights to felons who served their time and were not convicted of murder or sex crimes.

The 11th Circuit put a temporary hold on Hinkle's decision while it considered an appeal by DeSantis. That action put the rights of these former felons in limbo for months, well past deadlines to register to vote in the presidential election.

Florida Democratic Party Chair Terrie Rizzo said in a statement after the Supreme Court's action, "Florida Republicans have a shamefully transparent electoral strategy: voter suppression."