The 21st district is just one of three in South Florida that national Democrats are targeting heavily this year. They are also high on businesswoman Annette Taddeo (D), who is challenging Rep. Ileana Ros-Lehtinen (R), and Dade County Democratic Chairman Joe Garcia, who is running against Rep. Mario Diaz-Balart (R), Lincoln Diaz-Balarts brother.
Martinez and Garcia have been making the rounds in Denver during the Democratic National Convention this week.
Vice President Joe Biden waits to conduct a mock swearing-in ceremony with Sen. Brian Schatz, D-Hawaii, in the Capitol's Old Senate Chamber, December 2, 2014. Schatz was sworn in to serve the remainder of his term since he was appointed to the seat after Sen. Daniel Inouye, D-Hawaii, passed away.