it would be very difficult. the left is very well funded and entrenched in every party of your society. look at all the "antiracist" (antiwhite) protestors and hate not hope and all the other ngos. all funded by the government and unions. all will ruthlessly attack anyone that raises their voice. you have an unelected unaccountable blob that sits over the top of you that literally wants to take everything you have and give it to their preferred demographic (anyone that isn't white or british).  at the moment ukip is your only shot. doubtful they will get anywhere. ultimately you are going to have to revolt there isn't any other option. the right is too fragmented and you will have starmers boot on your neck for years.
Australia