Donald Trump speaks at a campaign rally in Ambridge, Pennsylvania, October 10, 2016. REUTERS/Mike Segar

Top Democratic strategists are moving to capitalize on the extraordinary events of the last several days, now believing they have a real shot of retaking the House majority after a slew of Republican lawmakers renounced their support of Donald Trump over his lewd comments captured on video.

Democrats are working quickly to ensure that no Republican lawmaker who has ever expressed support for their party’s presidential nominee can easily separate themselves from Trump following his 2005 comments about groping and kissing women in unwanted advances.

And they’re doing so with new television ads targeting Republicans such as Mike Gallagher, the Republican running to replace Rep. Reid Ribble (R) in Wisconsin’s Eighth District.  It is partially funded by the Democratic Congressional Campaign Committee — the House Democrats’ campaign arm.

The ad uses Trump’s language from the videotape, which was revealed by The Washington Post on Friday. “I moved on her like a [bleep], but I couldn’t get there, and she was married. And when you’re a star, you can do anything. Grab them by the [bleep].” It adds that Trump “didn’t pay” federal income taxes for 18 years and “mocked a disabled reporter.”

Tom Nelson, a Wisconsin Democrat running for Congress, attacked his Republican opponent Mike Gallagher's support for Donald Trump in his latest campaign ad. (Tom Nelson)

“Mike Gallagher still says we have to support Donald Trump. No, we don’t. We don’t have to support Mike Gallagher either,” the end adds.

It’s a perfect example of the damage Democrats hope to wreak by painting Republicans into a corner with their own sometimes conflicting positions. Gallagher, for instance, denounced Trump’s “disgusting and offensive comments” but did not withdraw his support for the GOP nominee.

Fresh internal polls conducted by the DCCC — the House Democrats’ campaign arm — after the second presidential debate on Sunday night painted a grim picture for Republican lawmakers.

They show that Republicans — who started moving en masse against Trump after the revelations in the videotape — faced a backlash regardless of whether they continued to support Trump or not. On Monday, House Speaker Paul Ryan (R-Wis.) told his colleagues in a conference call that he will no longer campaign for or defend Trump in public, but did not entirely rescind his support for the GOP presidential nominee.

The speaker plans to spend the next month, he told lawmakers on the call, “only campaigning for House seats and not going to promote or defend Trump,” according to a GOP lawmaker. Ryan plans to campaign in 17 states and 42 cities in October to help preserve his majority.

Ryan’s decision underscores a significant shift in the GOP’s confidence about their ability to retain majorities in both the House and Senate.

Democrats think that Republicans are now stuck in the impossible position of either embracing their party’s presidential nominee and alienating swing voters critical to maintaining their hold on Congress or rejecting him and angering their base.

In the wake of a new Washington Post report showing Republican presidential nominee Donald Trump speaking in very lewd terms about women in 2005, some Republicans are calling for Trump to step down as nominee. (Thomas Johnson/The Washington Post)

While a generic ballot tests shows a Democrat up by 7 points over any Republican lawmaker, the Democratic Congressional Campaign Committee’s poll — conducted nationwide by the Global Strategy Group — shows the Democratic candidate has a 12-point edge if the Republican recently withdrew their support from Trump. If a Republican lawmaker continues to support Trump, the private polling shows they are at a similar 12-point deficit.

“Voters think not standing up to [Trump] and standing with him are the same thing,” said Democratic Congressional Campaign Committee Executive Director Kelly Ward. “Voters blame all Republicans for creating this monster.”

“The only thing limiting us is our own budget and where opportunities exist in the battle field,” Ward said.

The survey showed that 61 percent of voters said Republicans who decided to withdraw support for Trump over the past few days “lack character and integrity” compared to 39 percent who said those Republicans “are showing character and integrity for standing up to Donald Trump.”

Winning control of the Senate, where Republicans hold a slim 4-seat majority, has long been considered a much easier feat for Democrats as there are a number of GOP incumbents in blue states up for reelection. But securing the House majority was always seen as a longshot. As recently as last month, House Democratic leaders speculated that they might win 20 seats, still 10 short of their 30-seat goal.

With the videotape and Trump’s decision to highlight Bill Clinton’s peccadillos, Democrats think they now have the upper hand with independents, moderates and women in heavily populated suburban districts.

Democrats have their eyes on the 26 Republican House districts that Obama won in 2012 and an additional 23 where he came close to winning. That means taking on Republican incumbents like Reps. Barbara Comstock (R-Va.) in the suburbs of Washington, D.C., Mike Coffman in eastern Denver, Erik Paulsen outside of Minneapolis and Crescent Hardy outside of Las Vegas. All of those Republicans have rejected Trump, many of them in the last couple of days.

But Paulsen’s Democratic challenger, Terri Bonoff, said the congressman can’t distance himself from Trump at this point.

“It’s too late to disavow Donald Trump,” said Sean Oyaas, Bonoff’s communications director.

Oyaas believes the 2005 videotape is “the straw that broke the camel’s back” in a litany of “crude, dangerous things” from the Republican nominee. In Minnesota’s Third District, where there are lots of working, well-educated women, there are lots of voters who will be offended “ about men attacking women across the board.”

In the final stretch, Republican strategists and leaders have been encouraging members to focus on presenting themselves as a check on a Hillary Clinton presidency that could potentially result in a leftward shift of the country. Members have been told to do everything they can to localize their races and convince voters there is value in electing an experienced, knowledgeable advocate.

“You’re walking a tightrope,” said Kevin Madden, a partner at Hamilton Place Strategies who previously served as spokesman to then-House Speaker John A. Boehner (R-Ohio). “The candidates that very early on made their congressional race a choice between them and a candidate that was out of step of the district — not a litigation of whether you were for Trump or Clinton — those are going to be the ones that survive.”

Republican candidates “have to elevate the fact that they are aligned with the majority of voters on issues they care about,” Madden said.

The seemingly impossible choice has many Republican strategists privately preparing for the worst while publicly promising to soldier on.

Others say that they’re relying on Trump’s history of regaining ground after previous gaffes to help preserve the GOP majority.

“Do I think house Republicans are going to lose seats? Yes,” said Thomas Reynolds, a retired GOP congressman from New York and former chairman of the House Republican campaign arm. “Do I think they’ll lose the majority? No.”

For months Republicans have argued that many of their members can easily outperform Trump by running an issues-oriented campaign focused on plans to overhaul Obamacare, cut taxes and shore up Social Security. But that strategy can only go so far and Trump is lagging dangerously behind Clinton in recent polls.

An NBC News-Wall Street Journal survey released Monday showed Trump taking a big dip following the release of the videotape, with Clinton leading Trump by double digits among likely voters, 46 to 35 percent, in a four-way contest. Democrats had a seven-point lead on the question of which party voters would like to see control Congress.

In swing-state Pennsylvania, Democratic congressional hopeful Steve Santarsiero’s campaign also believes that Republican Brian Fitzpatrick’s weekend shift on Trump will ultimately lose him support.

“It reeks of opportunism,” Eric Goldman, campaign manager for Santarsiero. “He’s tried to please his base and voters in the middle, but instead voters are going to see through it for what it is.”