Not sure about 4 party politics. For decades the Liberals have been an irrelevancy and we had a two party system. It was only last election their few votes bought them into a coalition.
And as a result of that, the voters are deserting the LibDems at lightspeed. They are losing lots of votes at local, European, and national level. They must be dreading the general election.
UKiP looked well placed to replace the LibDems as the irrelevant third party in national politics. But their emergence does pose some new questions for politicians and voters.
a) Should the Conservatives try to form an alliance with them in certain seats?
b) Should Labour say now that they will not enter into a coalition with UKiP?
c) At national level, will voters vote UKiP knowing it may create a big Labour majority?
d) Will voters vote UKiP if it means a Conservative led coalition with UKiP?
e) Can UKiP up its game from the shambles of a one man party it is at present?
f) Can UKiP capitalise on what has been an undoubtedly good night for them?
g) Will this force either the Conservatives or Labour to change their policies before the general election?