Outside groups supporting Democratic Senate candidates are spending millions of dollars on early advertising aimed at softening up Republican incumbents and growing the field of states in play in next year’s elections.
Those groups have spent more than $9.3 million on television spots in six states in recent months — almost three times as much as supportive Republican groups have spent defending incumbent Republican senators.
What Republican spending has taken place this year has largely come from the U.S. Chamber of Commerce, which accounts for more than half the $3.7 million spent defending Republican incumbents this year. The Chamber has spent $950,000 touting McSally in Arizona, $531,000 for Collins in Maine and $879,000 for Tillis in North Carolina.
Meanwhile, the Senate Majority PAC has $13 million in the bank, and the Senate Leadership Fund, the largest Republican super PAC, has almost $6 million on hand. Those two groups typically raise the bulk of their funds in the months leading up to November.
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