DETROIT — Three Michigan Democrats running for the U.S. House in competitive races raised more last quarter than their Republican opponents, while GOP businessman John James led his suburban Detroit race and Michigan candidates in fundraising overall. The federal disclosure reports filed Saturday offer a glimpse of where congressional candidates’ finances stood at the end of September going into the last five-week stretch before the Nov. 8 midterm election when the GOP is aiming to flip control of Congress. James, a businessman and veteran running for the 10th District seat covering parts of M…