Speed Reads

Presidential polling

Here's proof that Ted Cruz and Marco Rubio would each beat Donald Trump in a one-on-one matchup

GOP presidential frontrunner Donald Trump, who has benefited tremendously from the fractured Republican field, would lose one-on-one matchups with both Sen. Ted Cruz (R-Texas) and Sen. Marco Rubio (R-Fla.), a new ABC News/Washington Post poll of Republicans and Republican-leaning independents reveals. Against Cruz, Trump trails 54 percent to 41 percent nationally. Against Rubio, Trump is behind 51 percent to 45 percent. ABC News calls the results "further signs of the apparent limits to Trump's popularity within his party."

The poll also found that Republican voters who don't back Trump would support a contested convention to block the current Republican presidential frontrunner from winning the nomination. While Republicans overall are still opposed to a contested convention, 63 percent of anti-Trump Republicans support it.

The poll has a margin of error of plus or minus 5.5 percentage points.