A Republican party office in Indiana has been vandalized as tensions rise with only three weeks to go until election day.

News of the attack on the offices of Delaware County Republican Party comes only days after a GOP headquarters in North Carolina was firebombed and graffiti reading: 'Nazi Republicans leave town or else' was spraypainted on a nearby building.

That attack was described as 'political terrorism'.

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Two bricks were thrown through the window, which had a number of posters on it supporting Donald Trump and his running mate Mike Pence, who is the Governor of Indiana

Now it has emerged that vandals struck in Muncie, Indiana last week, hurling two bricks through a window.

The window had signs for Donald Trump and local Congressman Todd Young hanging in it at the time.

Officials said on Facebook the window cost $1,200 to replace the broken window and asked for online donations.

The window by the entrance door to the office was decorated with dozens of posters supporting various Republican candidates locally and nationally

The window is believed to have been smashed on October 8, the day after the video tape emerged of Trump bragging about his exploits with women and talking about how he would 'grab them by the p****'.

Indiana is a Republican stronghold and the Governor, Mike Pence, is Trump's running mate.

Only two out of the nine Indiana members of the House of Representatives are Democrats.