A lot of those are based off of Zogby polls. Zogby is using online polling to get his battleground results. That doesn't breed great accuracy when people sign-up online and the only way the data is confirmed is a Zogby rep calling the individual and asking if their information is correct. He's also now begun to address partisan Democratics like he did to the Arizona delegates at the DNC. That's not exactly an independent pollster.
For the AZ delegates address:
While Zogby seems to be a couple points more Democratic then other polls taken at the same time, I only have a problem with 2 of the states on that map.
Arizona- a poll using likely voters from 7-12/7-14 showed Bush up 12, while the one that is apparently used in this map is from 7-15/7-17 has Kerry up 1 and does not disclose who the sample is and it has a larger MOE. That is also only the second poll taken in AZ that has showed Kerry up and the previous was 2 pts back in the middle of February. The previous 3 AZ polls had Bush up 12.
Tennessee is not in play.
That puts the map at 268-253 Kerry with both Missouri and Nevada at less then 1% to Kerry and 2 other states that are tied.
Oh well, polls are really worthless until a few weeks after the RNC and the debates are about to begin. At that point any "bounces" from both conventions will have worked themselves out of polling results.