Sorry for your loss.
Yes, you can still file as Married Filing Jointly if your Spouse is Deceased in 2020. In the Personal Info section, enter both your names and indicate that Edward is deceased, and enter the date.
If you are not Edward's spouse, but want to file a tax return for him, you can do this in TurboTax.
Click this link for more info on Filing for a Deceased Person.
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