White House plans to use its influence in Missouri

In an article examining the waning influence of the White House and presidential advisor Karl Rove in this year's elections, the New York Times reveals the White House has decided to narrow its focus to six states, including Missouri.
Presumably, that would mean the president will likely return to the state to stump for Sen. Jim Talent's reelection between now and November:

They have decided to focus the majority of White House resources on defending embattled Republican House and Senate members in six crucial states, said party officials who did want to be identified discussing internal deliberations. As of now, those states are Connecticut, Indiana, Missouri, Ohio, Pennsylvania and Washington, though officials said the battle lines could shift in the coming weeks.