Trial Balloon:

An idea a politician suggests in order to observe the reaction. If public reaction is favorable, the politician takes credit for it; if not, the idea dies quickly.tactical voting.A method in non-preferential, first past the post electoral systems, where the voter knows his preferred party has no chance of winning yet maintains a strong animus for the higher polling, expected winner. In such a situation he/she would vote for the next highest polling candidate, with the hope, if others with the same sentiment acted similarly, that any other candidate would still be a better result.