Obama’s No. 2 pounds McCain harder than ever in rock ‘em, sock ‘em remarks during a rally St. Clair Shores, Michigan.

“I could walk from here to Lansing, and I wouldn’t run into a single person who thought our economy was doing well, unless I ran into John McCain.”

“The same campaign that once called for a town hall a week is now launching a low blow a day.”

Also calls McCain “Bush 44.”

Watch video above. Read full remarks here.

McCain camp response: “Barack Obama’s running mate today made more ridiculous comments that are not credible and stand in complete contradiction to their record.” Read it here.