Prime Minister Malcolm Turnbull has refused to rule out calling a double dissolution election.
Turnbull said on Sunday he wanted the coalition government to go full term, but was keeping the door option to call a snap double dissolution.
He said it could be used to reinstate the construction watchdog and trade union governance reforms, if the senate voted down legislation for a second time.
"My assumption is that the election will be in the usual time, you know, August, September, October," he told ABC television's Insiders on Sunday.
"But it is open to us to go to a double dissolution -- not as a tactical measure. If we go to a double dissolution, it will be an order to use the deadlock-breaking provision of the constitution."
The Prime Minister just explained what a double dissolution is to Barrie Cassidy. #Insiders— ABC News Intern (@ABCnewsIntern) February 6, 2016
Turnbull has previously described a double dissolution election as a live option if the crossbench again blocks the reintroduction of the Australian Building and Construction Commission (ABCC).
Crossbench senators have said they are not intimidated by the threats.