More people are leaving “blue” counties, those that lean Democratic, than moving in. But politics aren’t the reason -- home prices are.

In the first half of the year, 7.4 percent more people migrated out of blue counties in the U.S. than came in, compared with a 1 percent gain for red, or Republican, areas, according to an analysis by brokerage Redfin Corp. of online home-search data.

“Purple” counties -- those with a more balanced mix of party affiliations -- saw a gain of 3.9 percent.

On average, a home in a blue county costs about $360,000, more than 62 percent higher than the typical residence in red counties, Redfin said.

“We see a great number of residents moving to red counties where they can afford the lifestyle they want,” Redfin Chief Economist Nela Richardson said.