No, buying an overseas travel medical insurance policy will not boost an applicant's chance of getting a TRV.
It's a good idea for applicants like elderly parents/visitors who may remain for long duration. It shows that possible medical emergencies have been covered
If you are applying for a regular TRV, having medical insurance won't make a difference in regards to your visa application. Yet, it is a pretty smart idea to get an insurance coverage for as long as you stay in Canada, since as a visitor you won't be covered under any provincial insurance plan, which could be a serious issue, if it comes to paying the bills for medical services.
And here you have a choice of getting an overseas travel insurance or the Canadian private policy for Visitors to Canada. The latter would be easier to manage and cover the treatment costs for medical emergencies you may have within the country.
Here is a list of major Canadian insurance providers, what they offer and at what price - Visitors to Canada Insurance
For Canadian TRV overseas medical insurance is not a compulsion, however it shows prudence on part of the visitor. Also I think it gives some assurance to the Canadian govt. regarding applicant not being a burden on tax payers or inviter incase of a medical emergency.
For Canadian TRV overseas medical insurance is not a compulsion, however it shows prudence on part of the visitor. Also I think it gives some assurance to the Canadian govt. regarding applicant not being a burden on tax payers or inviter incase of a medical emergency.
Like everyone here said, having insurance won't boost your chances, since virtually anyone can purchase insurance, show proof, then immediately cancel it.