Hillary Clinton, the Democratic presidential candidate frontrunner in 2016, kicks off a high-profile book tour this week that could offer hints about whether she will make a White House bid.

Alex Wong, Getty Images

"Hard Choices" will be released tomorrow, and experts will be keeping a close watch to see if Clinton can handle a campaign-like tour, which will bend through major cities across the country.

She continues to say her decision may not be reached until next year, as Republicans raise questions about her health.

Meanwhile, Gov. Chris Christie may attempt to boost his conservative credentials with a possible new pension proposal.

There is growing speculation that within the next few weeks, Christie will introduce a plan to create a sort of hybrid pension system, where public sector workers would save a significant amount for retirement in a 401K type account.

Like Clinton, Christie remains non-committal about 2016.