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Amid financial turmoil on Wall Street, Barack Obama released a rare two-minute spot today that delves into his proposals for reviving the economy, and John McCain released two 30-second ads Tuesday afternoon and this morning that focus on the GOP nominee's plans to reform Wall Street. Both candidates speak directly to viewers in these ads to reassure them that Wall Street and Washington -- not voters -- are to blame for the ailing economy.

"Wall Street's been rocked as banks closed and markets tumbled," Obama says in "Plan For Change" (subscription). "Six hundred thousand Americans have lost their jobs since January. Paychecks are flat and home values are falling. It's hard to pay for gas and groceries." The Illinois senator goes on to outline his plans to revive the economy, touching on everything from investing in renewable energy to ending the Iraq war. The ad doesn't mention McCain, but Obama does denounce the "petty attacks and distractions" that have "consumed" the election thus far.

In the more hard-hitting of McCain's two ads, "Foundation" (subscription), the Arizona senator speaks directly to "American workers," calling them "the best in the world." In a stark contrast to Obama's ad, McCain explicitly calls out his opponent, saying Obama's "only solutions" to the economic crisis "are talk and taxes." The GOP nominee goes on to assert that he'll "reform Wall Street and fix Washington," and concludes by implicitly referencing his military record: "I've taken on tougher guys than this before."

"Foundation," released early this morning, comes fresh on the heels of "Enough Is Enough" (subscription), which was unveiled Tuesday afternoon. This spot reiterates much the same message as another ad, "Crisis," that the campaign released Monday in direct response to the collapse of the financial firm Lehman Brothers. "I'll meet this financial crisis head on," McCain says in "Enough Is Enough." "Reform Wall Street. New rules for fairness and honesty. I won't tolerate a system that puts you and your family at risk."

McCain's trio of ads -- all explicitly underscoring the severity of the financial crisis -- illustrate the nominee's "turnabout" since initially reacting to the crisis on Monday by repeating his earlier claim that "the fundamentals of the economy are strong."