Senator John McCain says he 's ' seriously considering ' running for re - election . And that the campaign will be ` ` very , very , tough , '' starting with the GOP ' . McCain will announce his decision in early June .
Sen. John McCain says he 's 'seriously considering ' running for re-election . Warns that the campaign will be `` very , very , tough , '' starting with the GOP primary . McCain will announce his decision in early 2015 .