The National Council of Senior Citizens said Wednesday it is launching a campaign to dog Republican nominee George Bush on the campaign trail with signs reminding him of his 1985 vote in favor of a freeze on Social Security benefits. The council, which claims 4.5 million members, said it will undertake a massive distribution of voting records, literature and lawn signs to turn out older voters on behalf of Democrat Michael Dukakis for the Nov. 8 election. The group, created in the 1960s as an offshoot of organized labor to lobby for passage of Medicare, is planning news conferences on Thursday in 14 cities in Wisconsin, Illinois, California, Washington state and Ohio to publicize its stand. Its posters read, ``Bush whacked my Social Security on May 9, 1985. Vote Dukakis.'' Bush cast a tie-breaking vote on that date to defeat an amendment to exempt Social Security cost-of-living increases from a proposed federal budget freeze for 1986. However, President Reagan refused to endorse the freeze and it never became law.