The latest news on Boccieri, John
Independent expenditures were nearly 60 percent higher than the 2006 midterms.
The Republican Senate committee comes in second.
What you need to know to follow the battle for Congress.
Allied outside groups also make final push to Election Day.
Senate Democrats spend third most last week.
Democrats are raising alarms about Republican ideas for reforming the nation's tax code.
House party committees spent more than $16 million last week.
Outside groups continue to favor GOP candidates.
Ad spending by GOP allies over the past two months has totaled nearly $30 million.
The White House is preparing to reintroduce the law to skeptical voters at its six-month anniversary.