Public Policy Polling says Democratic Sen. Claire McCaskill hold a narrow 4-point lead over Rep. Todd Akin in the 2012 campaign's closing days.
She's at 48%, Akin at 44% in a poll of 835 likely voters Nov. 2 and Nov. 3. The margin of error is plus or minus 3.4%.
"Akin's image isn't getting any better," the pollsters write. "He now has a 29% favorability rating with 56% of voters rating him unfavorably, the worst numbers we've found for him to date.
"Nevertheless Republicans are starting to unify around him a little bit more as the election approaches- he's gone from getting 74% of his party vote on our last poll to now 79%."
The pollsters also say support for Libertarian Jonathan Dine could hurt Akin.
"McCaskill's lead is largely built on the fact that 91% of Democrats support her while only 79% of Republicans support Akin," they write.