Describe your county's political/demographic history

[RedSLC]

My home county is Salt Lake County, Utah. Currently at 1 million residents and growing. The largest in the state, and one of the largest in the country.

Despite going for Romney by 20 points in 2012, the county itself is somewhat of a swing county when compared to other counties in Utah, narrowly voting for Obama in 2008, and having its local-level offices evenly split between the few parties.

Politically, it can be divided into three areas:

-Salt Lake City proper: My hometown, and the most democratic part of the county. Voted 69% for Obama in 2008 (and probably low 60's for Obama in 2012), and has a near-100 percent democratic delegation in the legislature (the one republican representing part of the city represents a district based primarily in Davis County, and actually lost the district's portion of SLC when he last ran.)
Has a fairly large Hispanic population (around 20 to 25 percent), as well as a large percentage of white democratic voters (Obama won the white vote here in 2008 and probably 2012, though I can't be sure), which may be because the city itself also has a large LGBT population. Despite popular perception, less than half of the city's population is Mormon today, with many having left for the ever-growing suburbs and exurbs.

-The inner-ring suburbs: I'd define this region as the suburbs of West Valley City, Kearns, Taylorsville, Millcreek, Midvale, Murray, Cottonwood Heights, Holladay, and South Salt Lake. They have moderate Hispanic population levels, and republican-leaning (though not as much as the rest of the state) white voters. This region acts as a swing region for the county, and winning here is pretty much required for those hoping to win in the county. Obama won most of these in 2008, but many of them by narrow margins, with Romney probably winning most of them in 2012. At the legislature level, they mainly elect republicans, but elect a handful of democrats as well.

-The outer-ring suburbs: The southernmost suburbs, consisting of Sandy, Draper, West Jordan, South Jordan, Riverton, Herriman, and Bluffdale. This part of the county is solidly republican, due to the lack of significant minority populations and even more republican white voters. Both McCain and Romney won every major suburb in this area, and the area has an all-republican delegation in the legislature.
My fellow Utahn Zioneer is from this region.