As we've noted before, the cancellation of the Red Line wasn't entirely the governor's fault. Had local officials been prepared with a Plan B, a lower-cost alternative, perhaps Mr. Hogan might have thrown his support behind it much as he did for a reduced-price Purple Line, the planned 16-mile light rail connecting Prince George's and Montgomery counties. Better that Mr. Kamenetz's support for a major new investment in public transit for Baltimore be viewed as a step in the right direction rather than a political shot fired. Now, it's up to the governor to demonstrate that he's willing to compromise — not for the sake of Mr. Kamenetz but for the economic well-being of the Baltimore region.