The much ballyhooed "Palin effect" on the McCain campaign and GOP efforts in general is no more. Or, if there is a Palin effect, it's likely a negative one. The evidence is in today's Research 2000 poll for DKos. Palin has higher unfavorables than favorables. Here's the gap between her positives and negatives over the past week:
Sept. 11: +17 (day the Gibson interview airs)
Sept. 12: +14
Sept. 13: +9
Sept. 14: +5
Sept. 15: +4
Sept. 16: +1
Sept. 17: -1 (today)
Today, 45% report an unfavorable view of Palin compared to 44% who have a positive view. John McCain has been trending down daily as well from a recent mark of +13 down to today's +3. By comparison, Barack Obama is +18 and Joe Biden +17.
If you don't trust the Research 2000 poll you can find the same trend in other polls, a sharp decline in favorability over the last week. Palin will be an anchor for the McCain campaign which explains this.
Update: Nice graph of this here.