In the Senate, it also takes a 2/3rds of 100 members = 67 votes to override a veto. (But if only 90 actually voted, then it would take only 2/3 of 90 = 60 votes to override). <br /> <br /> Assuming all members turn out to vote, 290 (House) + 67 (Senate) = 357 total votes are required to override a presidential veto.