Gov. Martin O'Malley continued his run as one of President Obama's most enthusiastic surrogates Tuesday night as he went on the Ed Schultz Show to criiticize Republican nominee-designate Mitt Romney's undisclosed offshore investments one more time.

Maryland's governor gleefully laid into Romney's reported investments in bank accounts or corporations in the tax havens of the Cayman Islands, Bermuda and Switzerland. Such an investment strategy, O'Malley said, "means you're not contributing to the economy and not making it grow."

But O'Malley declined an open invitation from the hyper-liberal Schultz to label Romney's foreign investments as "unpatriotic." Instead, as Obama did in a clip Shultz showed, the governor sidestepped the question.

Instead, O'Malley chose to decry the notion that "the higher a rich guy's Swiss bank account ... the more jobs you have in America," he said. "Give me a break."

The Schultz show isn't a great place to reach the middle-of-the-road or independent voters Obama needs in November. But it is a terrific venue for a Democrat seeking name recogition among the party base -- particularly the activists who could help decide the early primary contests in the 2016 race for president.

Of course, O'Malley insists that it's too early to think about running in 2016. But he keeps turning up in the right places for someone who plans to do just that.