New Mexico congressional candidate Bill McCamley (who's running for Steve Pearce's seat), just came up with a very creative idea for taking the rug out from under self-financing candidates, in this case his oil executive primary opponent Harry Teague (who has hardly been a loyal Democrat, donating $1000 to Steve Pearce himself in 2004). Other grassroots challengers should repeat it.
From the AP:
A Democratic candidate for New Mexico's 2nd Congressional District has written a $47.50 check to has campaign.
Bill McCamley of Las Cruces staged today's event to contrast his opponent's campaign loans worth $475,000.