Democrats seek challenger wins in GOP Senate territory.
New York (D) Sen. Charles Schumer eyes GOP-held Senate seats in 2006: Rhode Island, Pennsylvania, Ohio, Missouri, Montana, Tennessee, and
Arizona.
The Senate currently has 55 Republicans, 44 Democrats and one Democratic-voting independent. In 2006, there are five open Senate seats, as well as 14 Democratic senators seeking re-election and 14 Republicans seeking re-election.
