From Dave Weigel, after reading a poll showing that about 20% of the public thinks ACORN "will steal the election to keep Democrats in control of Congress":
We're about to go into the first election since 2004 where the Democrats won't do very well. It is also the first election since the 1970s when ACORN won't really exist. In 2004, 2006 and 2008, when things were either touch-and-go or terrible for Republicans, voters read lots of election-time stories about an organization called ACORN that was filing lots of bogus voter registrations. This year, Republicans will win, and I bet the myth of ACORN only grows — that a stubborn number of Americans will think that Democrats only won the 2006 and 2008 elections because of fraud, and that James O'Keefe saved us from it.
This is terrifyingly plausible.