Wrap: Missouri Lieutenant Governor Peter Kinder has expressed interest in running the U.S House office.

This raises the issue of how the lieutenant governor's office would be filled if he gets elected to Congress and leaves his current position.

Nixon says history gives him the authority to appoint a new lieutenant governor.

Republican leaders say a special election should be used to fill the vacancy.

Representative Jacob Hummel says Republicans only care because they think Nixon will appoint a Democrat.

Reporting from the state Capitol, I'm Brendan Cullerton.