Rep. Kendrick Meek (D-Fla.) is expected to announce tomorrow that he will run for Senate in 2010, becoming the first official entrant into the race to succeed retiring Sen. Mel Martinez (R-Fla.). The Associated Press reported Monday that Meek is entering the race, citing sources close to the Congressman. Many Democratic insiders are waiting to see whether Florida Chief Financial Officer Alex Sink (D) will get into the race. But Meek apparently isn’t holding up his plans for that decision and will make his announcement at a press conference scheduled for Tuesday morning in Miami. Meek, a member of the Congressional Black Caucus, is serving his fourth term in the House. First elected in 2002, he succeeded his mother, former Rep. Carrie Meek (D-Fla.).