Hawaii
Hawaii's Democratic Governor Neil Abercrombie appoints Lieutenant Governor Brian Schatz (a former state legislator and nonprofit group executive) to fill the term of the recently-deceased longtime Democratic U.S. Senator Daniel Inouye until 2014, when a special election will be called to fill the slot until 2016. His was one of three names known to have been submitted by the state party's central committee, along with an unnamed person and U.S. Democrat Colleen Hanabusa, whom Inouye had stated as his preferred successor hours before his death.
Sources: CNN