Put this together with the PPP poll released this week that says 40% say Obama should be impeached. 25% republican, 10% independents, 5% democrats. This spells trouble.
You can’t add the value of unlike parts together and then treat it as an absolute value of the whole.
So if approximately 40% of voters are GOP then 25% of that is 10% of voters (not 25%). If Democrats are 40% of the electorate then 10% of them is 2% of voters. And 10% of independents (if they are roughly 20% of the electorate) are another 2%.
Then it turns out to be around 14% of voters not 40%. Whoops!! :)