Should all ballots be secret in country-wide elections?

If your employer, family, strong person of any kind can see what you vote they might be tempted to use that against you. At the extreme you might loose your job, your wife or your inheritance.

Governments could easily misuse information about how citizens vote with undemocratic consequences.

The issue was regarding public vs. private voting in the context of electronic direct democracy, NOT elections. An election is a formal decision-making process by which a population chooses an individual to hold public office. It is completely different than voting on a proposition or issue (e.g. voting on Priorities in yrpri.org or other E2D platform). Could you please reword the question to reflect the actual debate?

This argument is regarding public vs. private voting in the context of electronic direct democracy, NOT elections. It is my right to take a public stance on an issue and display my vote for public scrutiny in an electronic direct democracy voting system. To deny a citizen this basic right and to make this choice on his/her behalf is undemocratic. You may choose to have your votes secret, I choose to have mine public; it's only fair.

Folks vote their own mind rather than follow the trend in votes.

A Citizen has right to keep their vote confidential. If the citizen chooses to disclose their vote they may do so but they must have secret ballot to maintain the right to confidentiality and choice.

With secret ballot there is no confirmation for sold votes.

you can implement some security tools to overcome this shortcomings, like 1 year delay of status secret./public change, hard to get information so that the information will be public but hard to get(this will just delay but won't be immediately visible), a panic button that will prohibit the change of status for 4 years. for me personally it is very important to make my vote public.