Mitt Romney has appeared on stage recently with a number of potential running mates, reports the Los Angeles Times, which many see as a "series of tryouts...as he tests the chemistry and optics of potential vice presidential picks."
"Though
Romney is not expected to make a formal decision anytime soon, the
vetting has clearly begun, with the campaign scrutinizing potential
running mates' electoral experience, geographic desirability and
affinity with GOP constituencies that remain wary of Romney... While
nearly all of the likely prospects have steadfastly denied that they
have any interest in the job because they are committed to their current
jobs as governors and senators, many are also simultaneously burnishing
their resumes."