Support for Democrats in the generic congressional ballot for the 2018 elections has dropped down to a three-point advantage over Republicans and within the margin of error, according to a CNN poll released Wednesday.

The poll shows a massive dip in support for Democrats over the past few months. A CNN poll in February showed that Democrats had a 16-point advantage over Republicans and in March CNN released a poll that showed Democrats had a six-point advantage over the GOP, CNN reported.

Forty-seven percent of registered voters in May said they support the Democratic candidate in their district while 44 percent support the Republican candidate, according to the poll.

Enthusiasm among Republican voters has also increased in the last few months. Thirty-six percent of Republican and Republican-leaning registered voters said in March they were very enthusiastic about voting. The May poll shows that number is up to 44 percent.

The numbers come as media pundits and Democrats have been predicting a “blue wave” will sweep Republicans in the 2018 November elections.

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However, Democrats still have a large lead over Republicans in voter enthusiasm. Fifty-three percent of Democrats said they are very enthusiastic to vote for their candidate compared to 41 percent of Republicans.

The CNN poll was conducted by SSRS through landlines or cellphones between May 2-5. The questions were asked to a group of 1,015 random adults in the U.S. There was a margin of error of plus or minus 3.6 percentage points and 3.8 points for the group of 901 registered voters.

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