Prominent Obama surrogates in 16 states hammering McCain for not knowing how many homes he has.
See the full list of events here.
Earlier: In a Chester, Virginia, town hall with Gov. Kaine, Obama slams McCain on the issue. Watch video here.
"If you don't know how many houses you have, then it's not surprising that you might think the economy is fundamentally strong!"
PLUS: Obama releases ad on McCain's houses. Watch it here and read script here.
More: Politico analysis finds McCain's family owns at least eight properties.
