Officials in November 2017 struggled for 25 minutes to find a vein to shoot lethal injection drugs into his arm.
His daughter told Newsweek she will be relieved when her father is put to death.
The double execution took place days after the state ended a nearly 12-year hiatus on executing prisoners on death row.
The Connecticut Supreme Court barred the state from executing 11 prisoners currently on death row.
The U.S. carried out the fifth most executions in 2014, a new report shows.
An East London restaurant intent on dishing out prisoners' last meals might get the axe