Answering perhaps the most significant question of the early 2020 election season, former Vice President Joe Biden will launch his presidential campaign on Thursday.

Democrats suddenly have a foothold that gives them subpoena power to probe deep into Trump's personal and professional missteps—and his long-withheld tax returns.

Fundraising, polls and history were not on the president's side. But two years after an election that proved polls and prognosticators wrong, an air of uncertainty—and stormy weather across parts of the country—clouded the outcome of high-stakes elections from Florida to Alaska and everywhere in between.

The Republican Party has adopted what Christian conservatives cheered as the most conservative party platform ever, pushing the GOP decidedly to the right on abortion and gay rights amid uncertainty about Donald Trump's policies.