The race for Republican Sen. Mel Martinez’s vacating Senate seat remains murky.

Tampa Mayor Pam Iorio is considering a run for the seat and would have an advantage in the general election hailing from an all-important bellwether region. 

Two candidates who were expected to enter the race both announced they will not be running: Florida Republican Attorney General Bill McCollum and U.S. Rep. Allen Boyd (D-FL) signaled their intentions to run for re-election to their respective posts. 

Boyd, a Blue Dog Democrat, was one of only 10 Democrats to vote against the Obama stimulus bill in the House, where it passed 244-188. 

As of now, U.S. Rep. Kendrick Meek and state Sen. Dan Gelber are the only two Democrats to officially enter the race. U.S. Rep. Ron Klein is still mulling a bid. 

No names have entered the Republican primary yet, but the Politico writes that former state House Speaker Marco Rubio and U.S. Rep. Connie Mack are preparing campaigns.