This Des Moines Register Monday headline attempts to sell what appears to be bad news for Gov. Palin's presidential prospects in a key primary state - "Iowa Poll: Sarah Palin's favorability rating slips among Iowa Republicans." But does it really? Let's investigate: 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.