Few polls can sway conventional wisdom like the NBC/Wall Street Journal poll does. So be on the lookout for a host of stories that question whether the Obama shine has begun to wear off, and the host of tough decisions he's made start taking their toll.

The new poll out tonight shows that President Obama still has a strong approval rating, 56 percent. But it's down from the previous survey, just before his 100th day.

Obama Job Performance
Approve 56 (-5)
Disapprove 34 (+4)
Not Sure 10 (+1)

The real warning sign seems to be the president's drop in support from independent voters. In April, these respondents backed Obama 60-31 percent. Now, that margin is much closer: 46-44 percent.

Still, 60 percent say Obama is focused in taking on many different issues, while 37 percent think he has too much on his plate. On some of those issues, 46 percent say they are confident in the policies he's pursuing on the economy, while 53 percent say they're only somewhat or not at all confident. 48 percent support his decision to eliminate waterboarding, compared to 41 who oppose. By a 52-39 percent margin, voters oppose his decision to close Guantanamo Bay, and 56 percent of voters also oppose the General Motors bailout, compared to 35 percent who support it.