truth. >> reporter: tonight a new cnn poll finds the president's approval rating has fallen six points in the last month. and now stands at a new low among independent voters. overall, just 36% approve of the way the president is handling his job. down from 42% in august. among independents, the drop has been sharper, from 47% approval last month to 31% now. only 32% find the president trustworthy. yet nearly 7 in 10 americans give the economy high marks. a ray of optimism for republicans two months before the midterm elections. the president crowed about the economy in a series of tweets today. declaring it so good. perhaps the best in our country's history. yet he incorrectly stated its exact strength, writing, the gdp rate, 4.2%, is higher than the unemployment rate, 3.9%, for the first time in over 100 years . but kevin hasset, chairman of economic advisers, said that wasn't true. >> what is true is that it's the