WASHINGTON (AP) — The two party committees tasked with electing House members are sitting on a combined $100 million pile of cash, suggesting voters in the handful of competitive districts will face an onslaught of late political advertising. Redrawn congressional districts favor Republicans, and only a handful of seats are seen as competitive. [...] the party that holds the White House tends to lose seats at this point in a president's term, and President Barack Obama remains deeply unpopular in many congressional districts.