Washington - US Senators Barack Obama and John McCain took aim at Wall Street and each other's economic policies on Tuesday, a day after stocks plummeted on news of Lehman Bros bankruptcy and a Merrill Lynch buyout.

Republican McCain called for a commission to investigate Wall Street excesses.

"In short order, we are going to put an end to the reckless conduct, corruption and unbridled greed that have caused a crisis on Wall Street," McCain said at a campaign event in Florida.

Washington, Sept. 16 : John McCain and Barack Obama have 50 days left to determine who among them will be the United States’ 44th President.

Heading into the frenzied final weeks, national polls remain essentially even.

If the trends are to be believed, the numbers in Ohio, Pennsylvania, Michigan, Florida, Colorado, Nevada, New Mexico, Missouri, Iowa, Wisconsin, New Hampshire and Virginia will be crucial to who will win and who will lose the election, reports the New York Daily News.

Washington, Sept. 16 : The financial crisis on Wall Street could derail Republican John McCain''s quest for the White House, even though he has recently called for regulatory reform.

“The fundamentals of our economy are strong, but these are very, very difficult times,” he told supporters in Florida, but added that he would take every step necessary to get Wall Street up and running again.

His Democratic opponent Barack Obama pounced on the suggestion that the American economy is strong and resilient.

Washington, Sept. 16: Polling in the five key battleground states shows John McCain and Barack Obama neck-and-neck with seven weeks left until Election Day.

According to a Rasmussen Poll, McCain holds a slight advantage over Obama in Colorado, Florida, and Ohio, while the candidates are tied in Pennsylvania and Virginia. In Florida, the gap between McCain and Obama exceeds three percentage points in polls with a four-and-a-half percentage point margin of sampling error.

The overriding message from these results is that the race remains very close.

Washington, Sept. 16: Reminding everyone repeatedly that you have been a former prisoner of war does not qualify you to be the president of the United States, says a former Naval Academy midshipman of John McCain, the Republican presidential nominee.

Phillip Butler, the former midshipman, who was also a prisoner of war along with McCain in Vietnam, said being a prisoner of war is not a good prerequisite for being president in an advertisement produced by Brave New PAC, a liberal political action committee affiliated with Brave New Films.

Anchorage (Alaska), Sept. 15 : Alaska Governor and Republican vice-presidential nominee Sarah Palin first gripped a gun at the age of eight and made her first kill at ten.

The moose hunting mum-of-five grew up shooting animals and skinning them on the spot before hauling the meat home for the family freezer.