So - assume a university want to elect the student council. This was done via paper ballot and there is a need to reach more students for voting, so electronic voting is on the table.

While researching existing solutions I came across Helios: https://vote.heliosvoting.org/ and http://agoravoting.org/

Both seem to implement somewhat peer-reviewed schemes to do a online vote.

My impression is: The devil is in the details. Has anyone here experience using these schemes? What problems or obstacles did you face?

We plan to implement such an online voting scheme and would authenticate the voters via the university LDAP - what problems or security problems could we face?

(I was refered here from a comment on security stack exchange)