Sinema won Maricopa County by 46,375 votes, 649,445 votes to McSally's 603,070. Just 32,000 votes separate the winner from the loser overall in Arizona as of this hour.
A magnet for affordable housing in the wake of the 2008 catastrophe, the county has probably on balance attracted more voters inclined to vote for a Democrat.
Maricopa County saw more people move to the area than any other county in the U.S. during the past five years.
The county saw 221,000 immigrants between 2012 and 2017, according to a new report from RentCafe. That volume was by far the highest in the country, the report shows. Nearly 150,000 people separated Maricopa County from the 10th-highest site of immigration, Wake County in North Carolina.
Among the appealing attributes for migrants looking for a new city to live in was Maricopa County's relatively low cost of living, especially home prices. Out of the top 10 counties for net internal migration, Maricopa had the fourth-lowest average home price.
On the opposite end of the spectrum, Los Angeles County saw 381,000 people leave during the same five-year span. Santa Clara County in Northern California was in the top 10 for people leaving as well.
