That’s what they are designed to do: convince the viewer that momentum and numbers make his election inevitable.
Make no mistake: this is specifically to demoralize Hillary supporters for Tuesdays OR & KY primaries.
Obama pulled the Edwards card out to blunt Hillary’s landslide victory in WV. Now he (with the full support of MSM stooges) are pulling out all stops to put her out of the race. They will only show here talking to smallish, bedraggled (unsophisticated) supporters, and contrast that with ‘multitudes’ fawning over Obama. Hence the pictures that precipitated this thread.