The national Pew Research Center survey of registered Democrats released Friday found Biden holds the support of 36 percent of Protestants and a whopping 44 percent of black Protestants, four times more than any other candidate. Catholic and Jewish voters also leaned toward Biden, while nearly twice as many atheists, agnostics and unaffiliated voters support either Sanders or Massachusetts Senator Elizabeth Warren. Meanwhile, religiously-unaffiliated Democrats, a broad group also referred to as “nones,” expressed overwhelming support for Sanders and Warren as their favored Democratic presidential candidates.

Thirty-six percent of agnostics, or people who claim neither faith nor disbelief in the existence of God or a higher power, said they support Sanders, compared to 16 percent who support Biden. Additionally, Sanders holds the highest percentage of support from atheists, who are defined by Merriam-Webster as “a person who does not believe in the existence of a god or any gods.” Warren trails just behind Sanders in atheist support but both progressive candidates have twice the backing of any other Democrat.

Both Biden and Sanders have three times as much support from Hispanic Catholics as Warren, who garnered only 7 percent of support from that religious group.