The Senate sits for the first time this parliamentary session today — with three new Senators and one new leader.

Former Opposition leader Michael Dunkley will sit among the United Bermuda Party ranks despite speculation over his future following his demotion in favour of new UBP Senate leader Jeanne Atherden.

Sen Dunkley is said to be very disappointed at the decision by leader Kim Swan, and some have tipped him for a move to the Bermuda Democratic Alliance, but he is said to have been quiet on that subject which was reported a week ago.

The Shadow National Security Minister has repeatedly declined to comment on his demotion or the resulting speculation, other than to describe himself as a team player.

Sen Dunkley has previously stated he's good friends with the MPs who left the UBP to form the BDA, and sources say he's held discussions with Alliance representatives.

However, it's thought likely anyone considering switching parties would wait at least until the result of next month's by-election, when the two Opposition parties are said to be fighting for second place.

New Progressive Labour Party Senators David Burt, LaVerne Furbert and Cromwell Shakir take their seats in the Upper House for the first time today, alongside long-serving PLP Senate leader David Burch and Economy Minister Kim Wilson.

Debate will focus on Premier Paula Cox's first Throne Speech, which promised to make big savings, tackle gun violence through a new Gang Task Force and help businesses by extending the Economic Empowerment Zone.

The UBP has given cautious support to many of Ms Cox's ideas and Mr Swan has welcomed her less aggressive tone, but the Opposition has also claimed more needs to be done on long-standing concerns over education, crime, debt and transparency.