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More than half of the country has a message for former Republican vice-presidential nominee Sarah Palin: enough.

That's the result from a new NBC News/Wall Street Journal/Annenberg poll in which 54 percent of voters say they've heard enough from Palin and would prefer that she be less outspoken in political debates.

That includes nearly two-thirds of Democrats, a majority of independents, and even nearly four-in-10 Republicans.

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And the results come as Palin has called for President Barack Obama's impeachment.

But Palin isn't the only former politician voters wish would stay away from politics. Fifty-one percent of voters say they've heard enough from former presidential candidate Jesse Jackson; 45 percent say they've heard enough from former Vice President Dick Cheney; 43 percent say they've heard enough from former House Speaker (and presidential candidate) Newt Gingrich; 40 percent say they've heard enough from former Vice President Al Gore; and 32 percent say they've heard enough from former President Bill Clinton.

The same poll also finds 36 percent of voters saying the U.S. economy has improved and President Obama deserves credit for it, 16 percent saying the economy has improved but he doesn't deserve credit and 47 percent saying the economy hasn't improved during his presidency.

And it finds that a combined 52 percent of voters say the federal health-care law either needs a major overhaul (27 percent) or should be totally eliminated (25 percent), while a combined 43 percent say it needs only minor modifications (36 percent) or is working well the way it is (7 percent).

The NBC/WSJ/Annenberg poll was conducted June 30 to July 7 of 1,137 registered voters (though it wasn't conducted July 4). The margin of error of these registered voters is plus-minus 3.4 percentage points.

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It’s time to take action and do what we can to stop this imperial President. That includes the House doing its... http://t.co/kb4gnD65T5 — Sarah Palin (@SarahPalinUSA) July 9, 2014