In George McClellan’s race for the presidency, he stated he would

Acall for a total Union victory
Bsuspend habeas corpus in rebellious regions
Creinstitute slavery in the border states
Dcall for negotiations ending the war
Eemploy a naval blockade around the Confederacy

Verified Answer :

In George McClellan’s race for the presidency, he stated he would "(A) call for a total Union victory," since it was this promise that broke with his party's major platform stance, which was to call for negotiations with the Confederacy.