Some more post-Democratic convention polls are coming out showing that Barack Obama got a bounce out of the party's meeting. Several show Obama with a statistically significant lead and one has the race tied.

A Diageo/Hotline poll conducted Aug. 29-31 has Obama ahead of John McCain 48 percent to 39 percent with 8 percent undecided. The margin of error is 3.5 percent. Before the convention, Obama had a 4 point lead. One reason is that Obama now leads McCain 42 percent to 33 percent among independents after trailing him 38 percent to 36 percent before the convention. Obama's favorable-to-unfavorable rating improved from 55 percent to 38 percent before the convention to 60 percent to 31 percent. McCain, at 51 percent to 41 percent, stayed about the same

Today we update New Jersey. Also, check out our "Senate Races to Watch" and our state-by-state election forecasts for detailed stories on races in each state from the tops of the tickets down.

• New Jersey: Democrat Frank Lautenberg leads former Republican Rep. Dick Zimmer 50 percent to 32 percent in an Aug. 7-11 poll conducted by Zogby. The margin of error is 3.5 percent. A Quinnipiac University conducted Aug. 4-10 had Lautenberg ahead by a closer 48 percent to 41 percent margin with 11 percent undecided in a survey of likely voters by. The margin of error is 2.6 percent. Although the lead doesn't look insurmountable, Quinnipiac's Clay Richards said, "It's summer and voters aren't paying a lot of attention to this race. When they do, the incumbent's lead may get bigger - if voters don't get too concerned about the Senator's age." Those polled believed that Lautenberg was too old to serve another 6 years by a 55 percent to 39 percent margin, and that even included 50 percent of Democrats. But that doesn't appear to be helping Zimmer whose own problem is that 62 percent of voters don't know enough about him to form an opinion. A Rasmussen Reports poll conducted Aug. 4 had Lautenberg ahead 51 percent to 33 percent. That was up from his 13 point lead last month. Lautenberg leads 45 percent to 28 percent among unaffiliated voters and by 60 percent to 25 percent among women, while Zimmer leads 43 percent to 40 percent among men. Lautenberg's favorable-to-unfavorable numbers are 48 percent to 45 percent and Zimmer's are 37 percent to 41 percent. A Strategic Vision poll conducted July 11-13 had Lautenberg ahead 48 percent to 32 percent with 20 percent undecided. CQ Politics rates this race ["Democrat Favored."] (http://www.cqpolitics.com/wmspage.cfm?docID=senate-NJ)

Barack Obama leads John McCain 47 percent to 41 percent in an AP-Ipsos poll conducted July 31-Aug. 4. The margin of error is 3.1 percent. McCain leads by 10 points among white voters and runs evenly with Obama among men. Obama leads by 13 points among women, 30 points among voters under the age of 34, and by 55 points among blacks, Hispanics and other minorities.