OSID - osid.voting.Ballot Service Interface Definition

Interface	osid.voting.Ballot
Implements	`osid.OsidGovernator`
Implements	`osid.Temporal`
Description	A `Ballot` represents a set of races.
Method	canRevote
Description	Tests if races on this ballot can be modified before the election ends.
Return	`boolean`		`true` if votes can be modified, `false` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	getBallotRecord
Description	Gets the ballot record corresponding to the given `Ballot` record `Type.` This method is used to retrieve an object implementing the requested record. The `ballotRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(ballotRecordType)` is `true` .
Parameters	`osid.type.Type`	`ballotRecordType`	the ballot record type
Return	`osid.voting.records.BallotRecord`		the ballot record
Errors	NULL_ARGUMENT		`ballotRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(ballotRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.