The NYTimes has a new feature which allows you to look at each primary and quickly compare the different demographic groups and how they voted for the Republican candidates. In true dualistic format, it is set up as a head to head contest. Demographics, in this case, includes items such as age groups, born again Christian, income, gender, can beat Obama and more. Make sure you run your cursor over each group so all the candidates appear. Here is the delegate tracker which Romney leads over Santorum by 476 to 246.