Coinbase co-founder and CEO Brian Armstrong has endorsed several Republican candidates in November's U.S. Senate election. Lawyer John Deaton and former Bridgewater CEO David McCormick are both running as Republicans, with Deaton running for a Massachusetts Senate seat and McCormick running for a Pennsylvania Senate seat. In another X post on Oct. 20, the Coinbase CEO also endorsed Republican challenger Deaton, who is trying to oust U.S. Democratic Senator Elizabeth Warren, who is known for her skeptical stance on cryptocurrencies. While Armstrong is backing a Republican Senate candidate, he is not backing a presidential candidate.