The Club for Growth has spent $2.5 million helping Cruz. Jim DeMint’s Senate Conservatives Fund has put about $773,000 behind Cruz. FreedomWorks is backing Cruz to the tune of $350,000 already, according to data provided by the Center for Responsive Politics. …

Dewhurst has hauled in more than half a million dollars from business PACs, which is 33 times Cruz’s take from business PACs. K Street lobbying firms are siding with Dewhurst, too. The PACs of Greenberg Traurig, K&L Gates, McGuire Woods and other lobbying firms have donated to Dewhurst. …

This crossfire about donors tells us something about the conservative base today. Attacking one’s opponent as being too close to Washington is a fine tradition in American politics, but attacking an opponent as too close to business and K Street is fairly new in the Republican world. Cruz is doing just that.