AR-Sen: Bill Halter announces challenge to Lincoln

It's on:

Lt. Gov. Bill Halter says he is seeking the Democratic nomination to challenge Sen. Blanche Lincoln this fall.

Halter's spokesman provided a statement Monday in which the one-term lieutenant governor said he would file papers for the U.S. Senate this week. Halter is the only Democrat to formally announce a challenge to Lincoln as she seeks a third term.

Rumors have been swirling about the candidacy for months, and it's a relief to have it official -- a true progressive will be facing off against Lincoln.

We'll be following reactions to Halter's announcement and further developments throughout the day here at Daily Kos.

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