Theoretically you could end up in a loop where the people vote in Party A in a minority government, then Parties B+C oppose a budget bill, an election is held, Party A is re-elected into a minority government, and Parties B+C oppose a budget bill, and so on.
But it's important to recognize that blocking a budget is a risky manoeuvre. In all likelihood the above cycle would never happen more than once or twice because people find elections irritating. If people think you called an election frivolously then voters will punish you at the polls; in the above example people would eventually get pissed off at B and C and break the cycle by giving A a majority so that they can pass their budget without opposition support.
The important thing is that in the Westminster system (e.g. Canada, Australia, New Zealand, UK) if Parliament loses the ability to pass important bills then it results in an election. It keeps the opposition parties honest insofar that they have to be confident that they would actually gain in the polls in order for them to force an election by blocking the government. They can't just block things without repercussions.
Theoretically you could end up in a loop where the people vote in Party A in a minority government, then Parties B+C oppose a budget bill, an election is held, Party A is re-elected into a minority government, and Parties B+C oppose a budget bill, and so on.
But it's important to recognize that blocking a budget is a risky manoeuvre. In all likelihood the above cycle would never happen more than once or twice because people find elections irritating. If people think you called an election frivolously then voters will punish you at the polls; in the above example people would eventually get pissed off at B and C and break the cycle by giving A a majority so that they can pass their budget without opposition support.
The important thing is that in the Westminster system (e.g. Canada, Australia, New Zealand, UK) if Parliament loses the ability to pass important bills then it results in an election. It keeps the opposition parties honest insofar that they have to be confident that they would actually gain in the polls in order for them to force an election by blocking the government. They can't just block things without repercussions.