Franklin County will be split into two congressional districts — one urban and one mostly rural — under a new map approved by Ohio lawmakers last week.

Driving the news: Gov. Mike DeWine signed the map into law on Friday, though one election rights lawyer has already announced plans to challenge the new district shapes in court.

• The map separates Ohio's 11.7 million residents into 15 equally-populated districts.

Zoom in: Should the map withstand legal scrutiny, Columbus area residents would be split into two distinctly different districts. Here's a closer look at them:

3rd District: The GOP-drawn map includes just two Democratic-leaning districts across the state, and this is one of them.

• Located mostly within the I-270 outerbelt, it includes much of central and northern Columbus along with the communities of Worthington, Upper Arlington, Bexley, Whitehall, Gahanna, Reynoldsburg and others.
• The district would lean heavily blue, with the minority population making up close to half of all residents.

15th District: The rest of Franklin County would be located in this Republican-leaning district.

• This includes southern Columbus and German Village, along with the communities of Dublin, Hilliard, Westerville, New Albany, Grove City, Groveport, Canal Winchester and Obetz.
• Pairing these towns with all or parts of six rural counties in southwest Ohio gives the district a Republican tilt, though it is still close enough to be considered a "competitive" district.
• White constituents would make up more than 75% of its population.