Yes--I liked the character of Jackie Sharp and had hoped she would appear again--veteran, etc. Also, Heather Dunbar. Those season 2 and 3 storylines seemed cleaner.

I am still confused if Mark Usher and Jane Davis are in cahoots with one another.

Presidential Campaign 2016 *Frank Underwood convinces her to run for President to compete with Heather Dunbar. Although concerned about her lack of experience, Underwood promises if she drops out and endorses him he will nominate her as Vice President of the United States to replace the unpopular Donald Blythe.

Concerned she will receive little support in her campaign as, unlike Heather Dunbar, she doesn't have a family, Jackie marries Alan Cooke and becomes stepmother to his two children. Before the Iowa Caucus debate, Underwood encourages her to criticise Dunbar for sending her children to a private boarding school, which contrasts to her public stance on education. Jackie does this, but Underwood unexpectedly begins criticising her, as her husbands children also attend private school. Although Underwood claims he did so to dispel potential rumours of them working together, Jackie drops out and endorses Dunbar instead.*