Now with two weeks to the election, speculation is rising that Hillary Clinton may win a landslide victory over Donald Trump, and that she might have “coattails”, help to carry in a Democratic majority in the House of Representatives and Senate.
The Senate part of this equation seems very likely, but to gain the House of Representatives majority will be very difficult, with the Republicans having a 30 seat majority right now, greater than at any point since 1928.
The last time a President coming into office had the effect of switching both houses of Congress was 1952, when Dwight D. Eisenhower brought in Republican majorities, which, however, were lost by 1954.
After that, the House of Representatives did not fall into Republican hands again for 40 years, until 1994!
The Senate, however, did fall into Republican hands with the victory of Ronald Reagan in 1980, only to be reversed in 1986.
So best bet is that the House majority will be knocked down a great amount, maybe 20 seats gain, but short of a majority for the Democrats.
On the other hand, the Senate seems likely to turn over, and Hillary Clinton could help to switch the states of New Hampshire, Pennsylvania, North Carolina, Florida, Illinois, Wisconsin, Arizona, as well as Indiana, and keeping Nevada, the only contested Democratic seat, meaning a eight state gain for the Democrats, from 46 seats to 54, and including the likely defeat of Marco Rubio and John McCain.
Missouri, a less likely state for Hillary Clinton, but within reach, could also see Jason Kander, the Democratic nominee, defeat Senator Roy Blunt, but not seen as such, unless Missouri reverts to being a bellwether state which it was for a century, but not so in 2012.
Iowa and Ohio seem more likely to keep Chuck Grassley and Rob Portman, even if Hillary Clinton wins their states.
So the idea of a “split ticket”, only 11 percent in recent election years, seems only likely in those two Midwestern states, and maybe in Missouri and Indiana, but Hillary likely to carry other states listed above and help to make the Senate Democratic majority.