OMAHA—Nebraska Democrat Denise Powell will face Republican nominee Brinker Harding in the Nov. 3 general election as both parties continue their fight to represent an area that’s come to be known as the “Blue Dot.” Powell bested Nebraska state Sen. John Cavanaugh by a narrow margin, obtaining 38.9 percent of the vote for the Democratic nomination to run for Nebraska’s 2nd District House seat. Cavanaugh trailed closely behind at 36.8 percent support and a difference of 1,080 votes with 89 percent counted. The Democrats campaigned against the leadership of the Trump administration as much as they did against each other. Powell, a mother and small business owner, accused Cavanaugh of aligning with Republican President Donald Trump to muzzle Democrats on key issues such as abortion....