This weekend at the box office, three newcomers will enter the marketplace, although none are likely to set off fireworks. "The BFG" and "The Legend of Tarzan" both look to be flops for their studios, while "The Purge: Election Year" may outgross them both despite costing a fraction of their budgets. "Finding Dory" should continue to be the strongest swimmer of the bunch, and last weekend's runner-up, "Independence Day: Resurgence," will hope to get a boost from the holiday that serves as its namesake. Overall, box office revenue for the holiday weekend should total around $195 million, which would be down about 13% from the same weekend in 2011 (the last time July 4 fell on a Monday).

"Finding Dory" will likely see another strong hold this weekend, especially when factoring in the holiday gross on Monday. The Disney/Pixar sequel recently swam past $300 million at the domestic box office, becoming the fastest animated film to do so in just 12 days. Given that Disney stablemate "The BFG" is likely to fall flat at the box office, "Dory" is likely to remain the top choice among most family audiences this weekend. The box office smash is likely to add around $57 million to its coffers by the time the fireworks go off on Monday, raising its total to a spectacular $390 million.

"The Purge: Election Year" seems primed to pull off a minor box office upset and claim the No. 2 spot this weekend. The horror sequel from Universal cost $10 million to make, compared to the $100+ million budgets of the weekend's other two offerings. The horror genre has had a strong summer thus far, with "The Conjuring 2" and "The Shallows" both exceeding expectations on their respective weekends.

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