Sen. Mike Haridopolos will be named the 2011-2012 Senate President on Dec. 8 at 5 p.m.

The Melbourne Republican will assume the post after the two-year tenure of current Senate President Jeff Atwater ends next fall.

Atwater, R-North Palm Beach, is leaving the Senate to run for Chief Financial Officer.

Haridopolos’ ascension is a trifecta for the Palm Beach and Treasure Coast region and continue its domination of the top of the Senate for a total of six years.

Atwater’s district includes part of Broward and Palm Beach counties. He was preceded by former Senate President Ken Pruitt, a Port St. Lucie Republican whose district included Martin, St. Lucie and Palm Beach counties.

The southeastern portion of Haridopolos’ Senate District 26 dips into St. Lucie County.

The three political leaders each previously served in the Florida House before joining the Senate.