Billionaires Tom Steyer and Michael Bloomberg have spent exorbitant amounts of their own fortunes to fund their 2020 presidential campaigns. Here's a deep dive on how that's shifted public opinion so far.

Iowa Senator Joni Ernst seemed like a sure shot to win a second term. Now, though, her chances of reelection are less certain. What's driving this shift?

Elizabeth Warren's second-place polling average is reinforced by strong showings among high-information voters, an energized base, and seemingly broad support across the Democratic primary electorate.

So far, 19 Representatives have announced their retirements in 2020. Are they scared of losing re-election, or is something else causing the exodus?

Monmouth University's newest poll was one of the most buzzworthy of the primary. Here's why it should (and shouldn't) be taken with a grain of salt.

Despite a strong 2016 presidential campaign, Bernie Sanders has seemingly failed to capture the same magic in 2020.