Rep. Collin Peterson is the last uncommitted Minnesota superdelegate. And that might remain the case for some time.

According to his press secretary, Allison Myhre, the Seventh District congressman has not set a deadline for deciding on a choice between Hillary Clinton and Barack Obama. “He has said that he is probably not going to make a decision until sometime this summer,” notes Myhre, “probably not until the farm bill process is complete.”

As chairman of the House Agriculture Committee, Peterson has been enmeshed in negotiations over the long-stalled, $300-billion legislation. According to this Wall Street Journal story, the latest farm bill sticking point is sugar subsidies.

Nor will Peterson commit to reaching a decision on the presidential nomination by July 1, as urged by Democratic National Committee Chairman Howard Dean and other party leaders. “I’m not sure,” says Myhre of the deadline. “I doubt it.”

Last month Nancy Larson threw her support to Obama, leaving Peterson as the only uncommitted superdelegate in the state. Right now Obama has the declared support of eight superdelegates, while Clinton has three such endorsements.