Pro-Obama group beefs up ahead of any Clinton 2016 run

Washington (CNN) - The main super PAC that supported President Barack Obama's 2012 re-election is scheduled to announce new hires Friday, as the group works towards transforming itself into a key super PAC for a possible Hillary Clinton 2016 presidential campaign.

According to a Democratic source with knowledge of the moves by Priorities USA, the super PAC will announce that Buffy Wicks, a veteran field organizer who was a top staffer in the Obama re-election campaign, will become the group's executive director. Jonathan Mantz, an experienced Democratic fundraiser who served as national finance director for Clinton's 2008 presidential campaign, will join Priorities as a senior finance adviser.

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The source, who asked to remain anonymous to speak more freely, said it's doubtful there would be any announcement Friday regarding Jim Messina joining Priorities. Messina, who steered the President's 2012 re-election campaign, is reportedly discussing the possibility with Priorities.

Priorities is slowly laying the groundwork to transform itself into the designated high dollar super PAC backing Clinton if she runs for the White House again. While a separate group, Ready for Hillary, is focused on low dollar donations and growing its grassroots outreach, Priorities would become the main vehicle behind independent television ads in support of a Clinton candidacy.

Priorities top officials and advisers are mostly a mix of veterans who worked for Bill and Hillary Clinton, as well as Obama.

The Washington Post was first to report the Priorities announcement.