Candidates vying to be the Republican presidential nominee for 2012 square off tonight in a debate in New Hampshire. They’ll cover a wide range of topics, but for many voters the economy remains the key issue. Last week the stock market took another plunge, the sixth consecutive week of decline, and in many parts of the country the number of people looking for work remains alarmingly high. There are some relatively bright spots: Texas, for instance, leads the country in the net number of new jobs created over the last two years. A look at the kinds of jobs being created today, where and why.