An agonizing choice Conservatives have plenty of cause to abandon Bush BY BOB BARR Voting for president used to be so easy, at least for a conservative. There was the Republican candidate. You knew he generally stood for lower taxes, less government spending, giving fewer powers to the government, lower deficits and a zealous regard for individual privacy. Then, there was the Democrat. You knew he generally stood for higher taxes, more government and deficit spending, and a zealous regard for civil liberties. Throughout my own presidential voting history, the choices have rarely, if ever, been agonizing. Nixon vs. McGovern?...