Donors not crossing party lines

For all the talk about voters crossing party lines this presidential campaign, not many donors are doing so.

Only 2.5 percent of the individuals who have contributed more than $200 toward the 2008 presidential race are "double givers," having given at least a third of their contributions to each major party, a campaign finance watchdog group reported this afternoon.

And among the remaining major candidates, only a few hundred of their supporters are giving to the other party as well, the Center for Responsive Politics said.

Republican John McCain has collected the most money from members of the party opposite, $1.1 million from 1,200 Democrats, or about 3 percent of the money he has raised from people who are named in his campaign finance reports, according to the center's analysis.

Democrats Barack Obama and Hillary Clinton have each collected about 1 percent of their money from donors who otherwise favor Republicans -- $986,000 for him and $875,300 for her. Obama has about 1,800 Republicans on his donor list, while Clinton has 1,200.

(For the center's full website on presidential donor demographics, click here.)