<p>President Bush is making the Democratic Senate's refusal to vote on many of his judicial nominees a major campaign issue this fall. Eminently qualified nominees such as Miguel Estrada and Mike McConnell were nominated 14 months ago and have yet to receive even a hearing. But a fellow Republican is undermining Mr. Bush's effort to showcase vacancies that the Judicial Conference of the United States calls "judicial emergencies." Sen. John McCain of Arizona is blocking action on even those few nominees the Democrats are willing to confirm.</p>