The couple, married for more than half a century, were later found dead, clinging to a tree and to each other.

The Wright County poll workers, 70 and 73, were swept off the road around 4:30 a.m. near Manes, Missouri. Three other riders caught in the flood ultimately survived.

"This couple were wonderful people who donated their time to serve their community," said Wright County Clerk Loni Pedersen