Poll boosts Miami congressional challengers?

There's a split between older and younger Cuban Americans on whether exiles should be allowed to travel more often to visit relatives on the communist island, according to a new poll commissioned by a group seeking better U.S.-Cuba relations.

The poll was conducted in three congressional districts, including the ones represented by Reps. Lincoln and Mario Diaz-Balart, who both favor the travel restrictions President Bush imposed in 2004.

And the issue has become central to their re-elections, with Democratic challengers Raul Martinez and Joe Garcia pushing to relax the restrictions.