With fewer than two weeks until the Democratic Senate primary in Arkansas, challenger Bill Halter is doubling up Sen. Blanche Lincoln in dollars raised. The incumbent still has a considerable advantage in cash on hand, though some of those funds may only be available in the general election.

Per the AP:

Halter's campaign announced Thursday he raised $579,761 between April 1 and April 28, the last reporting period before the May 18 primary. Halter spent more than $1 million and has $558,147 in the bank.

Lincoln's campaign reported that she raised $300,933 during the same period, and spent nearly $1.5 million. She has more than $3.1 million in the bank.

Both Lincoln and Halter's campaigns have been blanketing the state's airwaves with advertisements. Eight Republicans are seeking the GOP nomination for Lincoln's seat.

Lincoln has not trailed in any of the primary polling, but she also is generally falling short of the 50 percent required to avoid a runoff campaign.

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