WASHINGTON (AP) — Democratic Sen. Joe Donnelly said Sunday he’ll support the nomination of Judge Neil Gorsuch to the Supreme Court, the third Democrat to break with the party as Republicans line up behind President Donald Trump’s choice for the high court.

With 52 Republican senators, eight votes from Democrats or the Senate’s two independents would be needed to advance the nomination and prevent a filibuster. So far, only Donnelly of Indiana, Heidi Heitkamp of North Dakota and Joe Manchin of West Virginia — all representing states Trump won in November and all up for re-election next year — have said they will vote to confirm Gorsuch.

Hours before Donnelly’s announcement, Senate Minority Leader Chuck Schumer said he didn’t expect Gorsuch to receive 60 votes to overcome a filibuster threat.

If Democrats mounted a filibuster, Senator Majority Leader Mitch McConnell was expected to seek a change in Senate rules allowing a simple majority of the 100-member Senate to confirm the nomination.

“Neil Gorsuch will be confirmed this week,” McConnell said on CNN’s “State of the Union.” He added: “How that happens really depends on our Democratic friends. How many of them are willing to oppose cloture on a partisan basis to kill a Supreme Court nominee.”

Such a change in Senate rules — known as the “nuclear option” — would likely be retained in the future and thus make Supreme Court confirmations more susceptible to simple party-line votes instead of bipartisan support.

Donnelly called Gorsuch, 49, a federal appeals court judge based in Denver, “a qualified jurist who will base his decisions on his understanding of the law and is well-respected among his peers.”

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