Michigan Lt. Governor Brian Calley plans to make a major announcement this afternoon on Mackinac Island. While he was initially expected to say he’s going to run for governor, Michigan News Network Lansing Bureau Chief Tim Skubick says he will instead likely announce his support for a part-time legislature. A proposal to put the issue before voters is expected to be submitted to the Board of State Canvassers in the coming weeks. There is also speculation that Calley also will announce sometime this week that he’s running for governor. Nearly 17-hundred political, business and community leaders will be on the island Wednesday through Friday for the annual Mackinac Policy Conference. Organizers say the three topics to be focused on are winning the race in connected technology, increasing economic opportunity and restoring civility in American politics.