An examination of election donations shows that McCaskill, a Democrat, is the only Missouri congressional candidate who gets more individual campaign support from outside the Show Me State than from within its borders.
Fifty-seven percent of the $6.3 million that McCaskill has raised for the 2012 campaign from individual donations comes from other states. The next highest is District 5 incumbent Democrat Emanuel Cleaver, who has raised 41 percents of his $269,000 from people in other states.McCaskill has raised an impressive $2.6 million from residents of Kansas City and St. Louis, MO, combined; but, as OpenSecrets.org notes, her totals from large, liberal metropolitan areas on the coasts are also impressive. She's hauled in $542k from New York City, $412k from the Washington, DC area, and $259k from Los Angeles, CA.
The map below from OpenSecrets.org is color coded by the dollar amounts McCaskill has received from residents of each state.