(Bloomberg) -- U.S. vice-presidential candidates Republican Mike Pence and Democrat Tim Kaine mentioned their running mates by name more than any other vice-presidential debaters since the events began in 1976. The record underscores the personality-dominated nature of the 2016 contest and the tall task of representing two universally known -- and unpopular -- presidential nominees. With their only debate in the books, Pence and Kaine each head to Pennsylvania on Wednesday to campaign in the key battleground state ahead of the Nov. 8 election. To contact the reporter on this story: Elizabeth Titus in New York at etitus2@bloomberg.net To contact the editors responsible for this story: John Geddes at jgeddes5@bloomberg.netSheldon Reback, Elizabeth Wasserman