Angry and frustrated voters are planning to use the midterm elections in one month to tell President Obama they oppose his agenda, the highest “no” vote percentage Gallup has measured in the past 16 years.

The polling outfit found that 32 percent of voters want to send a message of opposition with their vote, compared to just 20 percent who are sending a signal of support.

That is 13 points higher than in 1998 when former President Clinton was headed to impeachment for lying about his sex affair with a former White House intern and even a smidge higher — 2 points — than in 2008, when Americans were tired of President Bush’s military actions in Iraq and Afghanistan.

Gallup first asked the unusual question in 1998. It reads: “Will your vote for a candidate be made in order to send a message that you SUPPORT [Barack Obama], be made in order to send a message that you OPPOSE [Barack Obama], or will you NOT be sending a message about [Barack Obama] with your vote?”

Not surprisingly, Republicans want to use their vote as a megaphone of opposition. Said Gallup:

“A majority of Republican registered voters, 58 percent, say they will be sending a message of opposition to Obama with their vote this fall. In contrast, 38 percent of Democratic voters say they will support the president. Rather than supporting Obama, most Democrats, 53 percent, say they will not be sending a message with their vote.