WASHINGTON - The Moral Majority and the nation's largest anti-abortion organization said today they would seek to block Senate confirmation of Arizona Court Of Appeals Judge Sandra D. O'Connor as a Supreme Court justice because of her views on abortion. "Sandra O'Connor had a consistent and strong pro-abortion voting record while a senator in Arizona," said Dr. J.C. Wilkie, president of the National Right -to-Life Committee. President Reagan, in announcing Mrs. O'Connor's nomination, said he was completely satisfied with her record on right-to-life issues. He did not elaborate. WILKIE AND Richard Viguerie, publisher of the Conservative Digest, spoke bitterly of Reagan's choice, charging that the president had ignored the pledge of the Republican 1980 platform to name judges "who respect traditional family values and the sanctity of innocent human life." Douglas Badger, a lobbyist for the Christian Action Council, a Protestant group that opposes abortion, explained the opposition to Mrs. O'Connor by citing three votes which he said she cast in the Arizona Senate. Badger said that in 1970 - before the Supreme Court 's 1973 abortion decision - she voted for a bill that would have legalized abortions in Arizona under certain circumstances. He was unable to detail those circumstances. THEN IN 197 4, he said, she voted in the Senate Judiciary Committee and in the Republican caucus against a resolution calling on Congress to amend the Constitution to outlaw abortions. Also in 1974,