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Democrats may try to curb 527s (Alexander Bolton, 2/26/07, The Hill)

Senate Democrats are considering placing curbs on soft-money 527 groups amid evidence that they are beginning to lose the political advantage these largely unregulated funds have given them over Republicans.

This is a move Democrats had strenuously opposed during the last Congress, when they were believed to benefit from the lion's share of 527 money, but now there is evidence that more of the money from these groups, named for a clause in the tax code, is flowing to the GOP.