The Welsh Liberal Democrats have claimed that - apart from UKIP - they're the only party with a clear position on Britain's membership of the European Union.
The Lib Dems launched their European election campaign, saying that they're the true party of staying in the EU.
Lynn Courtney reports from Llandrindod Wells.
Political Editor Adrian Masters' take on what the European election results mean for the Welsh political parties
Voters have been urged not to take 'selfies' while voting tomorrow - and are warned that doing so could land them in prison.
The latest Wales barometer poll points to a close battle in the European election in Wales.