This up-to-date data, from a Republican media-buying source watching the race closely, illustrates just how little the candidates get from their biggest expense, TV ads. There is an exception to this: Negative television advertising did real damage to Rick Perry and to Newt Gingrich. But positive advertising seems to have made little dent.
- Rallies for climate change action are taking place around the world ahead of the United Nations climate talks in Paris. ›
- Planned Parenthood officials said they believed Friday's shooting at a Colorado Springs clinic was motivated by opposition to abortion. ›
- And watch a man react to the modern world after spending 44 years in prison. ›