A Republican candidate entered in the March 2 primary election to unseat three-term Democratic incumbent Sen. Barbara A. Mikulski said yesterday that the state Republican Party has repeatedly attempted to sabotage his campaign.
Corrogan R. Vaughn, a Baltimore County resident who ran for Sen. Paul S. Sarbanes' seat in 2000, accused party leaders of withholding access to a computerized list of likely voters (known as "Voter Vault") and favoring state Sen. E.J. Pipkin, a former Wall Street bond salesman also vying for Mikulski's seat.

