According to a just released Zogby Poll, the McCain/Palin ticket has opened up four point lead in the presidential race. Just as significant is that the public’s positive perception of both McCain and Palin are both over 50% and each of democrats have an approval below 50%. Based on the Zogby methodology, 100% online, I would suggest that the McCain numbers are UNDER-estimated. On-line studies tend to underdeliver seniors and rural Americans, both groups that tend to be McCain supporters:

Zogby Poll: Republicans Hold Small Post-Convention Edge But the race is tight, as both campaigns consolidate support UTICA, New York – Republicans John McCain and Sarah Palin left St. Paul, Minnesota, with a smallish bounce overall and some energy in key demographic groups, as the race for the presidency enters a key stage and voters begin to tune in to the contest, the latest Zogby Interactive poll finds.The McCain/Palin ticket wins 49.7% support, compared to 45.9% backing for the Obama/Biden ticket, this latest online survey shows. Another 4.4% either favored someone else or were unsure.

The Ticket Horserace 9-5/6 8-29/30
McCain-Palin 49.7% 47.1%
Obama-Biden 45.9% 44.6%
Others/Not sure 4.4% 8.3%

In the two-way contest in which just McCain and Obama were mentioned in the question, the result was slightly different, with McCain leading, 48.8% to 45.7%.

One-on-One Horserace 9-5/6
McCain 48.8%
Obama 45.7%
Others/Not sure 5.5%

In a Zogby Interactive survey conducted last weekend, just after the McCain announcement that Palin would join his ticket, McCain Palin won 47.1% support, while Obama/Biden won 44.6% support. The interactive survey of 2,312 likely voters nationwide was conducted Sept. 5-6, 2008, and carries a margin of error of +/- 2.1 percentage points. Pollster John Zogby: “Clearly, Palin is helping the McCain ticket. She has high favorability numbers, and has unified the Republican Party. The striking thing here in this poll is that McCain has pulled ahead among Catholics by double-digits. On the other hand, Palin is not helping with likely voting women who are not aligned with either political party. The undecided independent women voters decreased this week from 15% to 7%, but those women went to Obama. Palin is also helping among men, conservatives, notably with suburban and rural voters, and with frequent Wal-Mart shoppers, who tend to be “values” voters who like a good value for their money.” McCain’s favorability rating increased from 50% favorable last week to 57% favorable now, a significant jump that indicates the GOP convention was a success. Among independent voters, 61% now have a favorable impression of him, compared to just 49% who said the same a week ago. Nearly half – 49% – said they had a favorable opinion of Barack Obama, while 50% they had a negative impression of him. Among independent voters, 47% gave him favorable marks, compared to 46% who said the same thing last week. Among the vice presidential candidates, 54% said they now hold a favorable view of Palin, while 42% hold an unfavorable view. While 49% have a favorable opinion of Joe Biden, 47% hold an unfavorable view of him. Just one week ago, 23% told Zogby that they did not know enough about Palin to make a judgment about whether they held a favorable or unfavorable view of her – but this most recent survey shows just 4% were unfamiliar with her – another indication that likely voters paid attention to the GOP convention this week, which won the highest television viewership numbers ever earned by an American political convention.