The Liberal National Party (LNP) has failed in a bid to gain a court injunction against the Labor Party over a series of polling booth signs.

A similar bid against the lobby group GetUp likewise failed.

The LNP initially raised objections to Labor's white and purple banners, which were hanging on voting grounds in the Redlands electorate on Brisbane's bayside with the words: "Remember to number every square".

The LNP argued in the Supreme Court that the banner was misleading.

But Labor state secretary Anthony Chisholm said the party was allowed to continue displaying the signs.

On Saturday afternoon, the Supreme Court also rejected an LNP application for an injunction over Get Up's how-to-vote cards, which urged voters to put the LNP last on their ballot paper.

Meanwhile, spokesman the lobby group GetUp, Karl Toodsell, said he had spoken to voters who had been turned away from polling booths because they had no identification.

The Electoral Commission of Queensland (ECQ) said it was aware of such reports but they had not been confirmed.

The ECQ said while proof of identity was required at polling booths, voting was also compulsory and people should still be allowed to vote by completing a declaration envelope.

Turning voters away, if it occurred, was contrary to the instructions given to its issuing officers, the ECQ said.