Each year Thompson Scientific, better known for updating impact factors of journals, makes a prediction on possible Nobel Laureates based on their citation counts. They've proven to be quite successful in the past. This year they have for medecine the discoverers of homologous recombination, nuclear hormone receptors, and DNA fingerprinting. And it's a tight race, just look at the polls:
34% - Chambon, Evans, Jensen
33% - Capecchi, Evans, Smithies
33% - Jefferys
So which are you putting your money on?