The congressional campaign of businessman Francisco Canseco (R) is touting new internal numbers it says have him leading Rep. Ciro Rodriguez (D-Texas).

According to a poll for the campaign done by the firm On Message, Inc., Canseco leads 43 percent to 37 percent. The poll has a margin of error of 4.9 percentage points. 

Canseco is on the National Republican Congressional Committee's list of "Young Guns," but Democrats have hammered him in recent weeks over hundreds of thousands of dollars in tax liens on several of his properties. 

Despite Republicans viewing the seat as a potential pick-up opportunity in the fall, Rodriguez is in a strong financial position ahead of November. The incumbent had more than $700,000 cash on had at the end of the second quarter.