Honestly, is there any entity in politics more effective in slamming Mitt Romney than Jon Huntsman’s presidential campaign?

In this new video, Team Huntsman not only draws additional attention to Romney’s awful interview with Fox News, but also fact-checks Romney’s denials about flip-flops.

As is usually the case with Huntsman’s videos, any party or campaign can use a clip like this. Lob off the last five seconds, and anyone hoping to undermine Romney is ready to go.

This is just the latest in a trend. Huntsman is struggling badly to compete, and nearly every national poll shows him in last place among Republicans, but Huntsman and his campaign have been focusing heavily on slamming Romney, and they’ve proven to be very good at it.

Just this week, Huntsman hit Romney as a candidate voters “don’t trust,” and described him as being “in the hip pocket of Wall Street.”

And looking back over the last several weeks, this anti-Romney video from Huntsman was brutal, as was this one, and this one.

For that matter, one of the key anti-Romney lines of the year came from Huntsman’s spokesperson over the summer: “You know your job creation record is bad when you brag about leapfrogging a state ravaged by Hurricane Katrina. The reality is Mitt Romney’s record on job creation was abysmal by every standard.” It was an immediate clip-and-save quote.

For reasons that elude me, nearly all of the Republican presidential candidates have been content to give Romney a lot of passes, barely even trying to lay a glove on him over the last several months. Huntsman, clearly, is the exception. His attacks would probably have greater salience if Huntsman were a more competitive candidate, but the content should nevertheless be adopted by other campaigns as the season progresses.

Steve Benen

Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.