New Mason-Dixon Poll: Marco Rubio Crushing Crist and Meek

A poll released by Mason-Dixon added to what is increasingly the conventional wisdom in the U.S. Senate race -- that Republican candidate former House Speaker Marco Rubio is the front-runner in the contest.

The poll had Rubio with 42 percent and Gov. Charlie Crist, who has no party affiliation, with 27 percent. In third place with 21 percent, Democratic candidate U.S. Rep. Kendrick Meek has just half of the support that Rubio has.