WASHINGTON, Aug. 24 (UPI) -- U.S. liberals face extinction if they don't start having enough babies to keep up with conservatives, a Syracuse University professor told ABC News.
Professor Arthur Brooks said after studying numbers from the governmental General Social Survey, he found 100 unrelated liberal adults have 147 children, while 100 unrelated conservatives have 208 kids.
Brooks said that makes a difference, as 80 percent of people with political opinions vote like their parents.
In response, conservative pollster Kellyanne Conway told ABC liberals are creating their own fertility gap by their beliefs.
"They're for abortion policy, they're for same-sex marriage, they're for many of the agenda items that eventually mean you probably don't have children in the household," Conway said.
The professor, meanwhile said he had advice for liberals who wanted to reverse the trend.
"Have babies! Forgo the cat, have kids," Brooks said.