(snip)"PRINCETON, NJ -- A potential shift in fortunes for the Republicans in Congress is seen in the latest USA Today/Gallup survey, with the Democrats now leading the Republicans by just 3 percentage points, 48% to 45%, in voters' "generic ballot" preferences for Congress. This is down from consistent double-digit Democratic leads seen on this measure over the past year."(snip)

(snip)"As is true for the current structure of voting preferences for president, Democratic voters are nearly uniform in their support for the Democratic candidate in their congressional districts (92%), Republican voters are nearly uniform in their support for the Republican candidate (94%), and independents are closely split, with 44% backing the Democrat and 40% the Republican.

The new results come from a Sept. 5-7 survey conducted immediately after the Republican National Convention and mirror the resulting enhanced position of the Republican Party seen in several other indicators. These range from John McCain's improved standing against Barack Obama in the presidential race to improved favorability ratings of the Republicans, to Republican gains in party identification. The sustainability of all of these findings is an open question that polling will answer over the next few weeks.

The positive impact of the GOP convention on polling indicators of Republican strength is further seen in the operation of Gallup's "likely voter" model in this survey. Republicans, who are now much more enthused about the 2008 election than they were prior to the convention, show heightened interest in voting, and thus outscore Democrats in apparent likelihood to vote in November. As a result, Republican candidates now lead Democratic candidates among likely voters by 5 percentage points, 50% to 45%."(snip)

(snip)"With only 18% of Americans in August saying they approve of the job Congress is doing, similar to the average 20% approval rating for Congress all year, the Democrats in Congress have additional cause for concern. This scant level of approval could signal that voters are in the mood for change, disproportionately hurting Democratic incumbents.

The last time the yearly average for approval of Congress approached this low a level was in 2006, when the Republicans lost majority control of Congress after 12 years in power. The previous occasion was in 1994, when the Republicans wrested control from the Democrats."(snip)