From Eric Dondero:

A debate will take place today in Katy, Texas for the four candidates running in the GOP primary for US Congress District 14. The debate is sponsored by the Katy Tea Party Patriots.

To his credit Ron Paul, the longtime incumbent Congressman will be participating along with his two top challengers Gerald Wall and Tim Graney.

Fox News reports that it's not so much fiscal policy that Tea Partiers are upset with Paul on, although there are grumblings about his propensity to go after specific "pork projects" for the district. Rather, Tea Partiers are uneasy with his isolationist/non-interventionist views on foreign policy, and his weak stance on defense.

From Fox:

Tea Party 'Revolution' Targets Ron Paul in GOP Primary

Paul's son, Rand, is a Tea Party favorite in his race for Senate in Kentucky -- he was recently endorsed by Sarah Palin, who was the keynote speaker at the Tea Party Convention in Nashville earlier this month.

But Rand's dad appears to have fallen out of favor with some Tea Partiers. They say that while Ron Paul's fiscal conservative message is sound, he's a little too fond of pork-barrel projects and nowhere near tough enough on national security.

Both Graney (photo -right) and Wall (above left) have strong roots in the Texas Tea Party movement. Continuing:

Graney, a small-business owner who never ran for office before, said that while Paul has established himself as a national voice on his favored issues, he's not representing his district well.

He and Wall, who helped organize a local tax day Tea Party rally last April, said the claim that Paul inspired the Tea Party movement is false.

In actuality, Paul faces little threat from the three challengers, having raised $1.9 million for the race. Past Paul primary challengers (Cynthia Sinatra - Frank Sinatra's ex-wife in 2006, and Friendswood Councilman Chris Peden in 2008) maxed out at 30%. However, a slight possibility remains for a run-off if Paul doesn't win straight out 50%.

Clarification: It is generally viewed that the Tea Party was co-founded by Paul and the Libertarian Party, with a great assist by CNBC's correspondent Rick Santelli. Paul followers helped the Libertarian Party to organize three rallies very early on in Chicago, Seattle and Denver. But it is generally accepted that Eric Odom and the Illinois Libertarian Party originally took the lead and deserve the lion's share of the credit.