Photo: Donald Trump was silent for weeks after the allegations against Roy Moore surfaced. (Reuters) US President Donald Trump has endorsed Senate candidate Roy Moore, throwing his weight behind the embattled Alabama Republican ahead of next week's special election in the state that has been rocked by allegations of sexual misconduct. In a post on Twitter, Mr Trump said Republicans needed Mr Moore to win in order to secure votes on key issues such as immigration, even as other Republicans have backed away from the candidate. "Democrats refusal to give even one vote for massive Tax Cuts is why we need Republican Roy Moore to win in Alabama," he wrote. Mr Trump's tweet is his strongest endorsement of Mr Moore since the sexual misconduct accusations surfaced against the former Alabama judge last month. Mr Moore has stood firm in the face of sexual assault and misconduct allegations dating back 40 years. One woman claimed he touched her through her underwear when she was 14 years old. Leigh Corfman, now 53, told The Washington Post the incident happened in 1979. Mr Moore, the Alabama's former chief judge who was a 32-year-old state prosecutor at the time and is now 70, vehemently denied the allegations, calling them "completely false and a desperate political attack". The Washington Post story also quoted three other women who said Mr Moore dated them when they were between 16 and 18 years old and he was in his early 30s, though none said they had sexual contact with Mr Moore. Photo: The Harvey Weinstein effect has reached into US politics. (Reuters: Marvin Gentry) The Alabama Republican's campaign said the allegations were fabricated. The President has repeatedly slammed Mr Moore's Democratic opponent, former US attorney Doug Jones, but had previously backed Mr Moore's former Republican rival Luther Strange in line with Senate Republicans. "We need his vote on stopping crime, illegal immigration, Border Wall, Military, Pro Life, VA, Judges 2nd Amendment and more. No to Jones, a Pelosi/Schumer Puppet!" Trump wrote, referring to Democratic congressional leaders Nancy Pelosi and Chuck Schumer. While the Alabama Republican Party has also backed Mr Moore for the