Anger over the shutdown could be enough to push the GOP out of power, according to Public Policy Polling.
According to a new survey, 65 percent of Democrats or liberal-leaning independents say they would back Clinton.
Hispanics in the U.S. lean strongly Democratic overall, with only moderate differences based on their place of birth, poll shows.
The governor drew 21 percent support in a poll of Republican primary voters, while backing for Sen. Marco Rubio plunged.
The poll from Latino Decisions shows that even GOP champions of immigration reform trail top Democrats.
Markey leads 54 to 41 percent, with 4 percent undecided in the Boston Globe poll.
The pollster is trying to determine why its data on likely voters "skewed" toward Mitt Romney.
Former Secretary of State Hillary Clinton would hold an early advantage over top Republican presidential candidates in hypothetical 2016 match-ups in the critical swing state of Iowa, according to a new poll released Friday.
The survey, from Quinnipiac University, shows that Clinton would defeat Sen. Marco Rubio (R-Fla.) 48-37 percent among Iowa voters, and best Sen. Rand Paul (R-Ky.) 46-42 percent.
Vice President Biden doesn't fare as well, trailing Rubio 40-39 percent and Paul 44-39 percent.
Most voters believe that the Benghazi or Internal Revenue Service (IRS) scandals will still be major news in 2014, according to a new Rasmussen poll.
Sens. Kay Hagan (D-N.C.) and Mary Landrieu (D-La.) may have improved their 2014 electoral prospects with their decision to support legislation expanding background checks, according to a new poll released Thursday.
The survey by Democratic firm Public Policy Polling found that more than 70 percent of voters in both states support closing the gun show and Internet loopholes, and pluralities are more likely to vote for Hagan and Landrieu because of their vote.
In Louisiana, 45 percent of voters in the state say they are more likely to support Landrieu after the gun vote, while just 25 percent say they're less likely. Landrieu's approval rating has risen six points from February, and 72 percent of voters in the state say they favor background checks.