Only 115,000 jobs were added to the American economy in April, according to the jobs report released by the Department of Labor Friday morning—the smallest gain in six months. That’s significantly fewer than the 154,000 jobs that were added in March, according to today’s revised report. The unemployment rate fell to a three-year low of 8.1 percent, partly due to workers leaving the labor force. Economists had predicted before the release of the report that 170,000 jobs would have been added. Mitt Romney and Barack Obama’s presidential campaigns prepared themselves for the release of the numbers, which are taken as bellwether figures on the state of the American economy.