a first vote ,a second vote是什么意思?为什么不用the

a first vote ,a second vote是什么意思?为什么不用the
Slovakia found itself the centre of attention when its parliament
failed to pass a first vote in support of legislation designed to
boost the powers of the European Financial Stability Facility, the
euro-zone’s bail-out fund. After talks the opposition agreed to
back the bill in a second vote, in exchange for early elections in
The
March 2012. The EFSF expansion has been ratified by the 16
other countries in the euro zone.