‘Presidential’ vs. ‘Political’ Trips: A Blurry Line, and Tricky Math

By JACKIE CALMES

Mixing policy and politics, Mr. Obama is picking up the pace of his travel with that ultimate incumbent’s perk — unlimited use of Air Force One. The trips are mostly to about a dozen swing states that will decide the election and to two reliably Democratic states, New York and California, for campaign money.

And Mr. Obama is not the only frequent flier with a re-election agenda. Both Vice President Joseph R. Biden Jr. and the first lady, Michelle Obama, are increasingly stumping around the country as the campaign seeks to repeat its fund-raising success of 2008 and counter a building wave of G.O.P. cash.