By Robin Bravender, Politico

Big labor is off to a slow start stockpiling cash.

The AFL-CIO’s super PAC raised just $2.2 million in the first three months of this year, according to a campaign finance report released Friday. That’s $1.5 million less than the Workers Voice super PAC brought in during the last quarter of 2011.

Overall, the union super PAC has raised just under $6 million this election cycle, and ended March with about $4 million in the bank.

The latest fundraising reports from the AFL-CIO super PAC and other labor groups are the most recent indication that union super PACs aren’t likely to emerge as a counter force to well-heeled conservative groups. Just one conservative juggernaut, the Karl Rove-linked super PAC American Crossroads ended February with $23.5 million cash on hand, according to its latest reports.

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