(CNN) - More bad news for Wisconsin Sen. Russ Feingold.
Feingold, a three-term Democrat, now trails Republican businessman Ron Johnson by 7 points among likely voters, according to a new McClatchy-Marist poll.
Fifty-two percent of likely voters are backing Johnson, while 45 percent support Feingold. Three percent remain undecided.
The poll results are nearly identical to a September CNN/TIME/Opinion Research Corporation survey which showed Johnson leading Feingold by six points, 51 to 45 percent, among likely voters.
Feingold and Johnson both have near-unanimous support from voters in their respective parties, according to the McClatchy-Marist poll. Johnson, however, has amassed a 23-point advantage among independent voters, 58 to 35 percent.
In a recent interview with CNN, Johnson said he's "trying to appeal to voters across the political spectrum. ... Democrats, independents, Tea Party folks and Republicans. A lot of us all share the very real concern about what happens in this country. So I am not identifying myself as a Republican real blatantly."
On the campaign trail, he said, voters are so concerned about spending and debt that "they don't talk about parties at all."
The race is virtually tied among the larger pool of 806 registered voters, where Johnson is clinging to statistically insignificant 45 to 43 percent lead.
The September 26-28 McClatchy-Marist survey of 503 likely voters has a sampling error of plus or minus 4.5 percentage points. The sampling error among 806 registered voters is plus or minus 3.5 percent.