As Romney hits 50, the president stands at 47 percent, his lowest tally in Post-ABC polling since before the national party conventions. A three-point edge gives Romney his first apparent advantage in the national popular vote, but it is not one that is statistically significant with a conventional level of 95 percent confidence. [...]
However, Romney does now boast a statistically — and substantively — important lead on the economy, which has long been the central issue of the race. When it comes to handling the nation’s struggling economy, 52 percent of likely voters say they trust Romney more, while 43 percent say they have more faith in the president.