Standard the commons library has just published a useful list with details of when a member has changed allegiance from one political party to another or decided to sit as an independent mp.
Mps who have crossed the floor.
Keith martin martin came to parliament hill as a member of the reform party in 1993 and when it ultimately became part of the canadian alliance made a bid for party leadership.
He runs as a liberal in the 1957 election but is defeated.
True instances of crossing the floor leaving the government for the opposition or vice versa are rare.
If she runs for re election in 2019 under the banner of her new party history suggests that there is a good chance she will lose her seat despite the narrow margin between the two parties in the last election.
It s been a big month for floor crossers.
David emerson left ditched the liberals in 2006 to join prime minister stephen.
Quentin davies crossed the floor from the opposition conservative party to the governing labour party in june 2007.
Leona alleslev mp for aurora oak ridges richmond hill crossed the floor this week to join the conservatives from the liberal party.
Ross thatcher co operative commonwealth federation ccf mp from saskatchewan leaves the party to sit as an independent.
The first mp to cross the floor was in august 1868 with nova scotia s stewart campbell and since then 274 mps have followed his footsteps.
History of floor crossing.
Physically crossed the floor during a statement by prime minister boris johnson to join the liberal democrats.
Tilly rolston british columbia progressive conservative mla crossed the floor to join the british columbia social credit party of w a c.
Mps who have crossed the floor.
In the last 15 years just three mps have moved from the official opposition to the governing party none have gone in the opposite direction.
Suspended from the party over defying whip during vote against no deal brexit.