What does the word 'liberal' mean nowadays? It's a question worth asking. In North America, there has long been a distortion of the word to just mean big government and leftism, whilst in Australia, it is the name of what has become the major conservative party, a party that does not even support the freedom to marry for gay couples. Neither definition seems very 'liberal' to me.
In fact, the word 'liberal' has an inherent meaning, much like conservative or socialist. It means to support freedom. Of course, how this freedom is interpreted differs amongst individuals, but surely it doesn't mean taxation without representation or opposing the freedom to marry. We need to reclaim this word by strengthening awareness about what liberalism is (and what it is not).
All liberals should support freedom above any other ideology. A liberal may be conservative, progressive, pro-business, pro-environment, religious or atheist, or everything in between, but they must respect liberty above all else. Whilst they may have their own beliefs, they must not force it onto others. In politics, liberty must be their main game, and in upholding this liberty, they must not use the power of the state to force their beliefs onto others. For example, a liberal is free to not approve of same sex marriages personally, but should still vote for the freedom to marry. On the other hand, a liberal may be personally angry about climate sceptics not supporting more climate action, but has to fully understand that the mutual respect of each individual's personal conscience and the upholding of the principle of governments only levying taxes when there is a mandate to do so are too important to sacrifice in any case, and therefore will not use the climate emergency to justify distorting these principles.
Liberals may otherwise still have disagreements on policy and ideology. For example, some liberals believe that lower taxation and freer markets are always the key to freedom, whilst others believe that freedom would only equally be available to the poor and disadvantaged if a strong welfare safety net is available. Some liberals believe in gun control, citing that it is a right for citizens to be able to roam the streets without fear, whilst others believe that the right to bear arms is more important. Either way, these are all valid disagreements for liberals to have, because they are all about how freedom is to be maintained. Therefore, liberalism should be a broad church. I believe the consensus should be that everyone who truly believes in liberty for all should be allowed in, even though this welcome should not extend to encompass those who seek to take away others' liberty for any other ideological agenda (whether it is religious values, environmentalism, upholding tradition, or feminism).