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The country's biggest liberal super PAC, which helped re-elect President Obama last year, reportedly is shifting focus to support a possible Hillary Clinton White House bid in 2016.

The New York Times reported that Priorities USA Action, originally formed by ex-Obama advisers, is now raising money in support of Clinton.

There have been sporadic efforts by Democratic groups to encourage Clinton -- who has not yet revealed her 2016 plans -- to run, but this would mark one of the earliest and highest-profile efforts to date to raise money for someone who, at this point, is not a candidate.

The Times reports that the group has appointed new leaders, including ex-Obama campaign manager Jim Messina. The group also reportedly will be co-chaired by former Michigan Gov. Jennifer Granholm, who has called for Clinton to run in 2016.

Priorities USA reportedly is seeking six-and-seven-figure donations to fuel pro-Clinton ads and more.

'I think the numbers clearly show that she's the strongest presidential candidate on the Democratic side,' Messina told the Times. 'And Priorities is going to be there for her if she decides to run.'