It is the second felony conviction for Rowland, who resigned as governor a decade ago in a scandal over illegal gifts he received while in office.
Rowland, who served 10 months in federal prison a decade ago for taking illegal gifts while in office, faces seven counts this time, including obstruction of justice, conspiracy to violate election law and falsifying records.
The defense rested Wednesday after its only witness finished his testimony.
Former Connecticut Gov. John G. Rowland was indicted Thursday on charges he tried to hide his role in two congressional campaigns.
Former Republican congressional candidate Lisa Wilson-Foley and her husband pleaded guilty in a scheme to create a phony contract to hide the role Rowland played in the campaign.