These are the biggest corporate donors to Ontario PC Party

Research by CBC News has revealed that prominent developers were among the top donors to the Progressive Conservative Party of Ontario in 2016, helping it amassmore money than any political party in this province has ever collected in a year.

The Ontario PC fundraising machine kicked into high gear in 2016, collecting $12.9 million, more than double the Ontario Liberal Party's total. This happened as reforms were being introduced to ban corporationsand unions from donatingto the province's political parties, and as Liberal Premier Kathleen Wynne's approval ratings sunk to record lows.

• Ontario Liberals collected millions from exclusivefundraisers
• Corporate, union donations to end in Ontario in 2017

Data on who donated how much to each political party is publicly available from Elections Ontario, but the donations are not sorted in a way that reveals who gave the most.

CBC News crunched the numbers to discover that the top donor to the PCs in 2016 was Orlando Corporation, which bills itself as "Canada's largest privately-owned industrial real estate developer and landlord."

Donations totalling $159,600 came from Orlando Corp. and its subsidiaries, including Orlando Development Inc., Orlando Construction Inc., Quarre Properties Inc.and Heartland (Seven) Ltd.

Here's the list of the top donors to the Ontario PCs in 2016:

• Orlando Corp. $159,600
• Medipac $100,415
• LIUNA$74,070
• Canerector Inc & Hawkins Family $69,825
• Silver Hotel Group $59,185
• Insurance Bureau of Canada $43,460
• Mattamy Homes Ltd. $42,430
• Merit Open Shop Contractors Assoc. of Ontario $41,290
• Federation of Rental Housing Providers of Ontario $38,100
• Colonial House Capital Ltd. $33,500
• Valley Blades Ltd $32,500
• Interior Systems Contractors Assoc. of Ontario $31,775

During 2016,Ontario'sElectionFinances Actlimited donors to giving $9,975 to a party each year. However, donors were also allowed to give $9,975 during each election period, includingbyelections. There were three separate byelectionperiods in2016.Donors were also allowed to give a maximum of $1,330to candidates during each byelection period.

• EXCLUSIVE: Ontario's top political donors revealed

Each subsidiary of a company was also legally allowed to give the maximum, as could directors or senior executives of a company. The $100,415 donated by the PCs' number two donor, Medipac, includes donations from Medipac Assistance Inc.,Medipac International Communications Inc., and Medipac International Inc, all part ofMedipacTravel Insurance, headquartered in Toronto. In addition to that amount, Medipac's CEOJohn Quigley personally donated $33,915 to the PCs.

The PCs' biggest union donor was the Labourers International Union of North America (LIUNA). Its $74,070 in donations included contributions from LIUNACandian Tri-Funds, the LIUNA Provincial Council, and several LIUNAlocals, each of which was legally entitled to give the maximum.

New laws that took effect Jan. 1 bannedcorporate and union donations and alsodrastically reduced the amount an individual donor can give each year. However, the three main parties and the Green Party of Ontario will each receive taxpayer-funded allowances starting this year.

Figures from Elections Ontario show the PCs vastly out-fundraised the governing Liberals and the third-place New Democrats in 2016:

• Ontario PC Party:$12,924,953
• Ontario Liberal Party:$6,309,082
• Ontario NDP:$3,718,010

This was a switch from 2015, when the Liberals raised $9.2 million, double the PCs' haul for the year.The PC Partycollected its funds from 9,945 separate donations.

The banner year wiped out the PCs pre-existing debt of $6 million, leaving the party with a surplus of $2.1 million. The other two parties both remain in debt: the Liberals at $2 million in the red, and the NDP $3.2 million.

• Taxpayers gave $163M to Liberal party's top corporate donor