Likewise, the MPPT varies the ratio between the voltage and current delivered to the battery, in order to deliver maximum power. If there is excess voltage available from the PV, then it converts that to additional current to the battery. Furthermore, it is like an automatic transmission.
On the Supreme Court of the United States, Associate Justices Potter Stewart and Anthony Kennedy have been described as swing votes between the two factions of the court. In the United Kingdom, the  Essex man ,  Worcester woman  and  Holby City woman  are examples of personifications of swing voters.
That vote requires 60 Senators to agree to end debate. Often there is no filibuster of a Supreme Court nomination. In those cases, a debate is held on the nomination and then a vote is taken by the Senate. A majority of voting senators must approve the president's choice for the nominee to be confirmed.