Sarah Palin's popularity has declined among the very voters the former Alaska governor would need to impress first were she to seek the 2012 Republican nomination for president, The Des Moines Register's new Iowa Poll shows.
Palin's favorability has ebbed with Iowa Republican likely voters, whose most active members make up the state's presidential caucus electorate, in the past 15 months, according to the poll taken this month.
While a solid majority of this group still views Palin positively, the intensity has waned as Palin has become a regular national media presence but done little to cultivate a support base in Iowa.
The shift is not dramatic, but it raises questions about whether Palin would have staying power in Iowa as she moves closer to a decision on a White House run, pollsters say.
"One might ask the question: Is she wearing well? And the numbers are not moving in a favorable direction on that," Iowa Poll director J. Ann Selzer said.
Palin's favorability has slipped among Iowa Republicans who say they will vote in 2012 to 65 percent in the poll taken this month from 71 percent in November 2009