DEFENCE Secretary Philip Hammond urged Tory voters not to sit on their hands next Thursday as he campaigned in the region.
Mr Hammond said it was important the Conservatives generate momentum in the coming elections ahead of the General Election in 12 months time.
With polls forecasting the UK Independence Party is likely to emerge the big winner in the European elections, there are concerns among Conservative activitists that their voters may believe they cannot change the outcome.
Mr Hammond said: “I say to them momentum does matter in politics and if you are worried about Britain’s relationship with Europe you need to vote Conservative in order to get the referendum we have committed ourselves to deliver in 2017.
“If you are concerned about cementing this economic recovery so we can deliver our long term economic plan, get Britain back to work sustainably, then you need to make sure you get behind what we are doing in the Conservative government.”
Recent economic data has suggested the recovery is picking up momentum and Mr Hammond insisted that was starting to be reflected in public opinion.
“We’ve seen over the last few days incredible national opinion polling showing us neck and neck with Labour slightly ahead, that at the point where we are in the electoral cycle where we have been through a very tough time and it is clear that the economic recovery is not just taking hold but beginning to deliver for people.”
Mr Hammond visited to Brunswick Tooling, an engineering business in Brighouse. Voting takes place on Thursday across Yorkshire and the Humber for the European elections. Voters in 13 local authorities in the region will also be choosing local councillors.