Just in: With 85 percent of Ohio’s vote counted, the race is tightening: Santorum and Romney are now tied at 37 percent. That’s because a close look at the map suggests the 15 percent of the vote yet to be counted is in the larger cities of Cleveland, Akron and Columbus, where Romney is ahead of Santorum by up to 10 percentage points in each of those areas. Conclusion: Look for a Romney surge, and a race that goes to Romney.