Then vote for the party your intimidator picked, show them you voted for them when asked. Then simply vote again for the party you want (during election day if

Then vote for the party your intimidator picked, show them you voted for them when asked. Then simply vote again for the party you want (during election day if you are afraid they will show up unexpectedly again before election day), voiding your intimidated vote. Your intimidator will never know who you voted for during election day (unless they spied on you, but you also have that problem for non-digital votes)