The state Senate's historic tie and the size of the Democrats' narrow margin in the House are at stake in three Feb. 28 special elections.

Two Senate seats were vacated, along with a House seat, shortly before the 2017 legislative session began after two veteran senators and one state representative resigned.

Connecticut General AssemblyThose resignations left Democrats with a six-seat majority in the state House, with one seat vacant, while the state Senate is split 17-17 with two vacancies.

Senator Rob Kane (R-Watertown) stepped down from the 32nd District so he could be considered for appointment as state auditor of public accounts.

The General Assembly confirmed his appointment Feb. 1.

Senator Eric Coleman (D-Bloomfield), an attorney and former chairman of the legislature’s Judiciary Committee, resigned his 2nd District seat in anticipation of a judicial appointment.

Coleman was reelected to a 12th term last November with 84% of the vote.

In the House, veteran lawmaker Stephen Dargan (D-West Haven) resigned his 115th District seat to accept an appointment to the state Board of Pardons and Parole.

The state constitution bars sitting legislators from serving in another branch of government.

Two-term state Rep. Eric Berthel (R-Watertown) and Roxbury Democrat Greg Cava are vying for Kane’s Senate seat.

Cava, an attorney, unsuccessfully challenged Kane last November. Kane retained the seat with 66% of the vote.

In the 2nd Senate District, which includes parts of Bloomfield, Hartford, and Windsor, eight-term state Rep. Douglas McCrory (D-Hartford) will square off against Republican Michael McDonald, a former Windsor Town Council member.

If Berthel and McCrory are successful, special elections will be held later this spring for their state House seats.

In the 115th House District in West Haven, Democrat Dorinda Keenan Borer will face Republican Edward Granfield for the seat Dargan held for 26 years.

Dargan was reelected to a 15th term last November with 71% of the vote.