Well that didn't take long. Here's Donna Edwards on Hardball (via Crooks and Liars) going after the embargo and making a coherent case that a different approach is important. Cuba policy happens to be one of Donna's passions, so she knows a good deal about it.
One constant argument I hear about elections is that a voting record is enough to justify not challenging someone. I feel this misses one of the essential characteristics of how politics works. Voting records are important, but there is a huge difference between a good voting record and taking leadership with energy and vigor to get something done. Al Wynn actually had a great record on the embargo, but he was not a leader on the issue. You can already see that Donna Edwards is pushing the ball down the field.
In other words, it's good to have progressives in Congress, but it's much better to have progressive leaders in Congress.