As a tight battle nears for control of the U.S. House, Maryland has passed a significantly changed congressional map that changes the outlook for its midterm races — and moves thousands of voters into new, more compact districts that no longer “look like prehistoric animals,” as one anti-gerrymandering group put it. After a legal fight stymied a previous Democratic map, Gov. Larry Hogan (R) approved this redrawn version, which keeps one safe Republican seat and seven Democrat-held districts. But one of those seven now promises to be much more competitive, leaving some Democrats worried.